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一种细晶铸造镍基高温合金的组织与力学性能
杨金侠; 孙元; 金涛; 孙晓峰; 胡壮麒
2014-07-11
Source Publication金属学报
Issue7Pages:839-844
Abstract通过传统铸造方法和细晶铸造工艺制备一种铸造镍基高温合金的6种不同形态与尺寸的晶粒.结果表明,细晶铸造工艺制备的样品心部为0.5 mm左右的等轴晶,外部为柱状晶.相比传统铸造方法,细晶铸造工艺获得的晶粒较为细小.g'相和碳化物随晶粒尺寸减小而变得细小.室温拉伸性能和550℃下高周疲劳性能随晶粒尺寸降低而提高;在760℃和应力662 MPa条件下,合金的持久性能随晶粒尺寸减小而增加;但在982℃和应力186 MPa条件下,合金的持久性能随之降低.细化晶粒提高了合金的中、低温力学性能,但对其高温力学性能不利.
description.department中国科学院金属研究所
Keyword镍基高温合金 细化剂 持久性能 高周疲劳性能
Language中文
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73635
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
杨金侠,孙元,金涛,等. 一种细晶铸造镍基高温合金的组织与力学性能[J]. 金属学报,2014(7):839-844.
APA 杨金侠,孙元,金涛,孙晓峰,&胡壮麒.(2014).一种细晶铸造镍基高温合金的组织与力学性能.金属学报(7),839-844.
MLA 杨金侠,et al."一种细晶铸造镍基高温合金的组织与力学性能".金属学报 .7(2014):839-844.
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