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镍基单晶合金热处理过程中的组织演变
Alternative TitleMicrostructure Evolution of Ni-based Single Crystal Superalloy During Heat-treating
孙跃军; 葛艳辉; 张军
Source Publication热加工工艺
2012-01-25
Volume41Issue:2Pages:214-218
ISSN1001-3814
Abstract利用螺旋选晶法制备了镍基单晶合金,研究了热处理过程中合金的组织演变。结果表明:合金的铸态组织由枝晶组成,W偏析于枝晶干,Ti、Cr、Mo和Ta偏析于枝晶间,固溶处理可以消除铸态组织中的枝晶,减小成分偏析,固溶温度越高,粗大的γ’和γ/γ’共晶溶解的越完全。时效处理过程中,大尺寸的γ’发生粗化,小尺寸的γ’逐渐消失,时效温度越高,γ’粗化得越严重。热处理促进合金元素在γ和γ’中的均匀分布,减小了合金的错配度。
Other AbstractA Ni-based superalloy was prepared by screw selecting crystal method.Microstructure evolution of the alloy during heat-treatment was investigated.The results show that the as-casting microstructure is composed by dendrites.EDS analysis indicates that W partitioned in dendrite zone and Ti,Cr,Mo,Ta in inter-dendrite.Solid solution treatment decreases composition partitioning,and with the increase of the solution temperature,coarsening γ and γ/γ eutectic solves completely.During the aging treating,the larger...
Keyword镍基单晶合金 枝晶 固溶 时效 错配度
Subject Area新型材料的力学问题
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Indexed ByCSCD
Language中文
CSCD IDCSCD:4438456
DepartmentLMFS多相流及流固耦合(LHO)
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46451
Collection流固耦合系统力学重点实验室
Corresponding Author孙跃军
Recommended Citation
GB/T 7714
孙跃军,葛艳辉,张军. 镍基单晶合金热处理过程中的组织演变[J]. 热加工工艺,2012,41(2):214-218.
APA 孙跃军,葛艳辉,&张军.(2012).镍基单晶合金热处理过程中的组织演变.热加工工艺,41(2),214-218.
MLA 孙跃军,et al."镍基单晶合金热处理过程中的组织演变".热加工工艺 41.2(2012):214-218.
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