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  • 1
    Online Resource
    Online Resource
    Investigation of microstructure and mechanical properties of the Cu–3% Ti alloy processed by multiaxial cryo-forging
    Springer Science and Business Media LLC ; 2018
    In:  Journal of Materials Research Vol. 33, No. 22 ( 2018-11-28), p. 3700-3710
    Details
    In: Journal of Materials Research, Springer Science and Business Media LLC, Vol. 33, No. 22 ( 2018-11-28), p. 3700-3710
    Abstract: A Cu–3%Ti (wt%) alloy was processed by multiaxial forging (MAF) at cryogenic temperature up to 3 cycles, imposing a total strain of 1.6. Microstructure and mechanical properties of the unprocessed and cryo-forged samples were analyzed. X-ray diffraction results showed deviation in peak broadening and peak intensity of the cryo-forged samples in comparison to that of unprocessed, which are due to texture modification caused by grain refinement during the MAF process. Microstructural analysis showed reduction in grain size from 80 µm in the as-received condition to 250 nm after 3 cycles. Electron backscatter diffraction results indicated the transformation of high angle grain boundaries to low angle grain boundaries in all 3 cycles when compared to the as-received condition. Reduction in ductility was observed after 1 cycle, but with an increase in the number of cycles, both strength and ductility increased. After 3 cycles, ultimate tensile strength and hardness reached 1126 MPa and 427 Hv as compared to 528 MPa and 224 Hv for the as-received condition. Fractography analysis showed decrement in dimple size after 1 cycle, in comparison to that of the as-received condition. However, it kept on increasing for higher number of cycles.
    Type of Medium: Online Resource
    ISSN: 0884-2914 , 2044-5326
    URL: Article
    DOI: 10.1557/jmr.2018.253
    RVK:
    VA 5350
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 54876-5
    detail.hit.zdb_id: 2015297-8
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  • 2
    Online Resource
    Online Resource
    Fabrication of Friction Stir Processed Al-Ni Particulate Composite and Its Impression Creep Behaviour
    Hindawi Limited ; 2015
    In:  Journal of Composites Vol. 2015 ( 2015-02-03), p. 1-9
    Details
    In: Journal of Composites, Hindawi Limited, Vol. 2015 ( 2015-02-03), p. 1-9
    Abstract: Nickel powders were troweled on roughened Al base plate using a friction tool made from tool steel. Friction stir processing (FSP) was carried out using a load of 8 kN and with a tool rotation speed of 800 rpm and thus a surface composite was processed. Processed samples were characterized for revealing the microstructural features. SEM and XRD analysis revealed the presence of fine Ni particles in the stir zone which lead to a significant increase in hardness. Using the “refined energy model,” the maximum temperature developed within the processed zone was estimated and found to be around 275°C. Impression creep behaviour was assessed on both the base metal and processed zone at the temperature of 30, 100, and 200°C. Creep curves were generated and steady state creep rate (SSCR) values were found out to determine the activation energy. It is observed that friction stirred regions record higher creep rate values compared to the base metal. Estimated activation energy is in the range of 6 to 16 kJ/mol. Activation energy is marginally lower in the base metal compared to friction stir processed region.
    Type of Medium: Online Resource
    ISSN: 2356-7252 , 2314-5978
    URL: Article
    DOI: 10.1155/2015/428630
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2015
    detail.hit.zdb_id: 2760434-2
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  • 3
    Online Resource
    Online Resource
    Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications
    MDPI AG ; 2021
    In:  Applied Sciences Vol. 11, No. 22 ( 2021-11-19), p. 10986-
    Details
    In: Applied Sciences, MDPI AG, Vol. 11, No. 22 ( 2021-11-19), p. 10986-
    Abstract: Ultrasonic surface rolling process (USRP) is a novel surface severe plastic deformation (SPD) method that integrates ultrasonic impact peening (UIP) and deep rolling (DR) to enhance the surface integrity and surface mechanical properties of engineering materials. USRP can induce gradient nanostructured surface (GNS) layers on the substrate, providing superior mechanical properties, thus preventing premature material failure. Herein, a comprehensive overview of current-state-of-the art USRP is provided. More specifically, the effect of the USRP on a broad range of materials exclusively used for aerospace, automotive, nuclear, and chemical industries is explained. Furthermore, the effect of USRP on different mechanical properties, such as hardness, tensile, fatigue, wear resistance, residual stress, corrosion resistance, and surface roughness are summarized. In addition, the effect of USRP on grain refinement and the formation of gradient microstructure is discussed. Finally, this study elucidates the application and recent advances of the USRP process.
    Type of Medium: Online Resource
    ISSN: 2076-3417
    URL: Article
    DOI: 10.3390/app112210986
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2704225-X
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  • 4
    Online Resource
    Online Resource
    Aluminising of Mild Steel Plates
    Hindawi Limited ; 2013
    In:  ISRN Metallurgy Vol. 2013 ( 2013-02-20), p. 1-6
    Details
    In: ISRN Metallurgy, Hindawi Limited, Vol. 2013 ( 2013-02-20), p. 1-6
    Abstract: Hot dip aluminising of low carbon steel was done at temperatures 690°C and 750°C for dipping time ranging from 300 to 2400 seconds. During aluminising a mixture of ZnCl 2 and NH 4 Cl was used as flux. During aluminising components of the flux decomposed and zinc formed interacted with the Fe and Al. The aluminised samples were characterised for iron-aluminium intermetallic layer formation, morphology, and local composition. It was observed that intermetallic layer was predominantly Fe 2 Al 5 and FeAl 3 at 690°C and at 750°C coating consisted of FeAl 3 layer and a layer with Al/Fe ratio greater than 3.26. For both temperatures, coating thickness increased with increase in time. For a given dipping time, deposition was less at higher temperature and this is attributed to changes in the kinetics of growth of individual layers due to dissolved zinc in the aluminium, at 750°C. Also, spalling of intermetallic layers was observed at elevated temperatures and longer dipping times.
    Type of Medium: Online Resource
    ISSN: 2090-8717
    URL: Article
    DOI: 10.1155/2013/191723
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2013
    detail.hit.zdb_id: 2728079-2
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  • 5
    Online Resource
    Online Resource
    Laser Cladding-Based Surface Modification of Carbon Steel and High-Alloy Steel for Extreme Condition Applications
    MDPI AG ; 2022
    In:  Coatings Vol. 12, No. 10 ( 2022-09-30), p. 1444-
    Details
    In: Coatings, MDPI AG, Vol. 12, No. 10 ( 2022-09-30), p. 1444-
    Abstract: Laser cladding (LC) is a laser-based surface modification technique widely adopted to develop a thin coating or remanufacture worn-out mechanical components that work in extreme conditions. LC helps to generate superior surface properties and surface integrity on the substrate surface, improving the service life. This review paper provides a comprehensive overview of the LC process, different powder feeding methods, and the uniqueness of LC over other coating techniques. More specifically, the current state-of-the-art of the LC process on carbon steel and high-alloy steel-based mechanical components operating in diverse industries was elucidated. Furthermore, the effect of LC processes on mechanical properties such as wear, corrosion and fatigue properties are discussed. In addition, the LC process’s influence on microstructural features and microstructural modifications is explained. Finally, this study explores some potential applications of the LC process in diverse industries.
    Type of Medium: Online Resource
    ISSN: 2079-6412
    URL: Article
    DOI: 10.3390/coatings12101444
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662314-6
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  • 6
    Online Resource
    Online Resource
    Tribological, Corrosion, and Microstructural Features of Laser-Shock-Peened Steels
    MDPI AG ; 2023
    In:  Metals Vol. 13, No. 2 ( 2023-02-15), p. 397-
    Details
    In: Metals, MDPI AG, Vol. 13, No. 2 ( 2023-02-15), p. 397-
    Abstract: The degradation due to high friction, wear, and corrosion of mechanical components for industrial applications has invoked substantial economic loss. In recent years, scientists and engineers have developed techniques to mitigate the issues associated with this deterioration potentially. Among these developed techniques, controlling the coefficient of friction (COF), wear rate, and corrosion using laser shock peening (LSP) is a preeminent and popular innovation. This paper aims to summarize the existing literature on the LSP of steels, discuss the current state-of-the-art LSP, and demonstrate the mechanisms that dictate the enhanced tribological and corrosion properties. More specifically, the influence of LSP on COF, wear rate, corrosion potential, surface hardening, and surface morphological changes on various materials used for aerospace, automotive, biomedical, nuclear, and chemical applications is explained. In addition, grain refinement and the gradient microstructure formation during LSP are discussed. Additionally, recent advances and applications of LSP are elucidated.
    Type of Medium: Online Resource
    ISSN: 2075-4701
    URL: Article
    DOI: 10.3390/met13020397
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2662252-X
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  • 7
    Online Resource
    Online Resource
    Dual Stimuli Responsive Nanoparticle Conjugates for Hypoxia Targeted Drug Delivery
    Elsevier BV ; 2022
    In:  SSRN Electronic Journal
    Details
    In: SSRN Electronic Journal, Elsevier BV
    Type of Medium: Online Resource
    ISSN: 1556-5068
    URL: Article
    DOI: 10.2139/ssrn.4110908
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
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  • 8
    Online Resource
    Online Resource
    Organoclay enabled nanofiber formation from a polyolefin elastomer
    Wiley ; 2018
    In:  Advances in Polymer Technology Vol. 37, No. 5 ( 2018-09), p. 1278-1295
    Details
    In: Advances in Polymer Technology, Wiley, Vol. 37, No. 5 ( 2018-09), p. 1278-1295
    Abstract: The solution electrospinning of polyolefins has not been deeply studied mainly due to the difficulty in dissolving these polymers in appropriate solvents. In this study, composite nanofibers of organically modified montmorillonite/ethylene‐octene random copolymer were produced for the first time with a mixture of cyclohexane and xylene as a solvent by solution electrospinning. Montmorillonite was used as an additive to increase the electrical charge density of the polymer solution. The influence of solution and process parameters on the electrospun ethylene‐octene copolymer fibers' morphology and diameter was investigated using the design of experiment. Multiple regression analysis was used for the optimization of the electrospinning parameters. Ultrafine fibers, with diameters in the range of 150–350 nm were obtained; these nanofibers exhibited an excellent hydrophobicity over a period of 10 min as revealed by contact angle measurements.
    Type of Medium: Online Resource
    ISSN: 0730-6679 , 1098-2329
    URL: Issue
    URL: Article
    DOI: 10.1002/adv.2018.37.issue-5
    DOI: 10.1002/adv.21787
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2014633-4
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  • 9
    Online Resource
    Online Resource
    Ultrasonic Nanocrystal Surface Modification: Processes, Characterization, Properties, and Applications
    MDPI AG ; 2022
    In:  Nanomaterials Vol. 12, No. 9 ( 2022-04-20), p. 1415-
    Details
    In: Nanomaterials, MDPI AG, Vol. 12, No. 9 ( 2022-04-20), p. 1415-
    Abstract: Ultrasonic nanocrystal surface modification (UNSM) is a unique, mechanical, impact-based surface severe plastic deformation (S2PD) method. This newly developed technique finds diverse applications in the aerospace, automotive, nuclear, biomedical, and chemical industries. The severe plastic deformation (SPD) during UNSM can generate gradient nanostructured surface (GNS) layers with remarkable mechanical properties. This review paper elucidates the current state-of-the-art UNSM technique on a broad range of engineering materials. This review also summarizes the effect of UNSM on different mechanical properties, such as fatigue, wear, and corrosion resistance. Furthermore, the effect of USNM on microstructure development and grain refinement is discussed. Finally, this study explores the applications of the UNSM process.
    Type of Medium: Online Resource
    ISSN: 2079-4991
    URL: Article
    DOI: 10.3390/nano12091415
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662255-5
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  • 10
    Online Resource
    Online Resource
    Advanced High-Strength Steels for Automotive Applications: Arc and Laser Welding Process, Properties, and Challenges
    MDPI AG ; 2022
    In:  Metals Vol. 12, No. 6 ( 2022-06-20), p. 1051-
    Details
    In: Metals, MDPI AG, Vol. 12, No. 6 ( 2022-06-20), p. 1051-
    Abstract: In recent years, the demand for advanced high-strength steel (AHSS) has increased to improve the durability and service life of steel structures. The development of these steels involves innovative processing technologies and steel alloy design concepts. Joining these steels is predominantly conducted by following fusion welding techniques, such as gas metal arc welding, tungsten inert gas welding, and laser welding. These fusion welding techniques often lead to a loss of mechanical properties due to the weld thermal cycles in the heat-affected zone (HAZ) and the deposited filler wire chemistry. This review paper elucidates the current studies on the state-of-the-art of weldability on AHSS, with ultimate strength levels above 800 MPa. The effects of alloy designs on the HAZ softening, microstructure evolution, and the mechanical properties of the weld joints corresponding to different welding techniques and filler wire chemistry are discussed. More specifically, the fusion welding techniques used for the welding of AHSS were summarized. This review article gives an insight into the issues while selecting a particular fusion welding technique for the welding of AHSS.
    Type of Medium: Online Resource
    ISSN: 2075-4701
    URL: Article
    DOI: 10.3390/met12061051
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662252-X
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