In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 850 ( 2016-3), p. 802-808
Abstract:
In semi-solid rheocast and thixocast industry, T6 heat treatment was one key factor to improve the mechanical properties of the castings. The microstructure evolution was closely influenced by heat treatment temperature and time. In this paper, the morphology change of eutectic silicon in semi-solid alloy during different heat treatment time was firstly observed. The changes of both roundness and aspect show that the silicon particles underwent fragmentation, coarsening and growing up processes during solution treatment. Then, the mechanical properties after stand T6 and T6 with higher temperature were compared. It may be concluded that the higher temperature doesn’t have obvious effect to increase the mechanical strength, but severe negative effect on the elongation. Finally, the incipient melting defect appeared in higher temperature T6 was proved and its relationship with elongation was analysed.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.850
DOI:
10.4028/www.scientific.net/MSF.850.802
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2016
detail.hit.zdb_id:
2047372-2
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