In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 743 ( 2017-7), p. 273-278
Abstract:
This study discusses the role of thermal processes, including repair welding, and maintenance heat-up of cryogenic equipment, in the alteration of the properties of base metal and formation of thermal impact zones during repair and installation of joints from chromium-nickel steels with different nickel content. The tests have confirmed the primary role of nickel in the change of the properties of base metal and welded joints of low-temperature structures during operation and maintenance heat-up. It was shown that maintenance, repair and welding heat-up can lead to structure alteration and material embrittlement, which occurs in all steels, regardless of nickel content. The research has identified the areas that are potentially dangerous from the perspective of the brittle defect evolution in cryogenic equipment operating under complex thermal cycles during operation or maintenance heat-ups.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.743
DOI:
10.4028/www.scientific.net/KEM.743.273
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2017
detail.hit.zdb_id:
2073306-9
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