Tensile Behavior of Long-term Aged Nickel-base Superalloy

IMR OpenIR

	Tensile Behavior of Long-term Aged Nickel-base Superalloy
	Xia, P. C.; Chen, F. W.; Xie, K.; Yu, J. J.; xpc328@126.com
	2015
发表期刊	HIGH TEMPERATURE MATERIALS AND PROCESSES
ISSN	0334-6455
卷号	34 期号:4 页码:395-398
摘要	The microstructural change of directionally solidified nickel-base superalloy which was aged at 900 degrees C for 1500 hours and tensile behavior at different temperatures were investigated by scanning electron microscope (SEM) and transmission electron microscope (TEM). gamma' phase of the alloy coarsens and rafts in the course of aged treatment. The driving force of rafting is the decrease of interface energy and elastic strain energy. The stress of aged alloy increases slightly with the testing temperature. This arises from a few dislocations shearing the gamma' precipitates. There is a peak stress value at 760 degrees C, which is attributed to the high strength of the gamma' phase, the homogeneous deformation structure, and dislocation-gamma' precipitate and dislocation-dislocation interactions. The stress then decreases rapidly with increased temperature. The low stress of the gamma' phase and gamma' rafting at high temperature contribute to the drop of alloy strength. The change of elongation is inverse to that of the stress.
部门归属	[xia, p. c. ; chen, f. w. ; xie, k.] shandong univ sci & technol, sch mat sci & engn, qingdao 266590, peoples r china ; [yu, j. j.] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Superalloy Aging Gamma ' Phase Tensile Behavior Dislocation Coarsening And Rafting
资助者	Research Award Fund for Outstanding Young and Middle-aged Scientists of Shandong Province in China [BS2011CL032]; Taishan Scholars Project of Shandong [ts20110828]; National Natural Science Foundation of China [51272141]
收录类别	sci
语种	英语
WOS记录号	WOS:000356604500013
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75183
专题	中国科学院金属研究所
通讯作者	xpc328@126.com
推荐引用方式 GB/T 7714	Xia, P. C.,Chen, F. W.,Xie, K.,et al. Tensile Behavior of Long-term Aged Nickel-base Superalloy[J]. HIGH TEMPERATURE MATERIALS AND PROCESSES,2015,34(4):395-398.
APA	Xia, P. C.,Chen, F. W.,Xie, K.,Yu, J. J.,&xpc328@126.com.(2015).Tensile Behavior of Long-term Aged Nickel-base Superalloy.HIGH TEMPERATURE MATERIALS AND PROCESSES,34(4),395-398.
MLA	Xia, P. C.,et al."Tensile Behavior of Long-term Aged Nickel-base Superalloy".HIGH TEMPERATURE MATERIALS AND PROCESSES 34.4(2015):395-398.