IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Al含量对镍基单晶合金组织及持久性能的影响
Alternative TitleEffect of Al Content on Microstructure and Stress Rupture Properties of Nickel Based Single Crystal Superalloy
孙跃军; 葛艳辉; 张军
Source Publication热加工工艺
2011
Volume40Issue:2Pages:40-43
ISSN1001-3814
Abstract研究了铝含量对一种镍基单晶合金铸态和热处理态显微组织的影响,测试了单晶合金的高温持久性能,利用金相显微镜,SEM,TEM,XRD等考察了持久断裂试样的微观形貌.结果表明,单晶合金的铸态组织由粗大的γ',细小的γ'和γ组成,随Al含量的增加,粗大的γ'相数量增多,尺寸增大.固溶处理不能使粗大的γ'完全固溶,持久断裂裂纹主要在粗大的γ'/γ界面产生,并沿γ'/γ界面扩展,严重损伤合金的高温持久性能
Other AbstractThe effects of Al content on the microstructure of as-cast and heat treatment specimens were investigated.The stress rupture of the alloy at high temperature was measured and the microstructure of stress rupture specimens was observed by SEM,EDS,and XRD.The results show that the as-cast microstructure of the alloy is composed of coarsening γ’,fine γ’ and γ.With the increase of Al content,the more coarsening γ’ appears in the alloy and cannot be dissolved into γ matrix completely during solid solution heat-treating.The observation of microstructure indicates that the micro-cracks occur mainly at the coarsening γ’/γ interface during stress rupturing measuring and extends along γ’/γ interface,all these are harmful to the high temperature properties of the alloy
Keyword镍基单晶合金 铝含量 显微组织 持久性能
Subject Area力学
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Indexed ByCSCD
Language中文
CSCD IDCSCD:4135191
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/311007/45039
Collection水动力学与海洋工程重点实验室(2009-2011)
Corresponding Author孙跃军
Recommended Citation
GB/T 7714
孙跃军,葛艳辉,张军. Al含量对镍基单晶合金组织及持久性能的影响[J]. 热加工工艺,2011,40(2):40-43.
APA 孙跃军,葛艳辉,&张军.(2011).Al含量对镍基单晶合金组织及持久性能的影响.热加工工艺,40(2),40-43.
MLA 孙跃军,et al."Al含量对镍基单晶合金组织及持久性能的影响".热加工工艺 40.2(2011):40-43.
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