Tensile and Fracture Behavior of DZ68 Ni-base Superalloy

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	Tensile and Fracture Behavior of DZ68 Ni-base Superalloy
	E. Z. Liu ; S. C. Sun ; G. F. Tu ; Z. Zheng ; X. R. Guan ; L. F. Zhang
刊名	Journal of Materials Science & Technology
	2009
卷号	25 期号:6 页码:727-730
关键词	Ni-base superalloy Tensile strength Yield strength Fractograph high-volume fraction temperature-dependence yield stress alloys deformation gamma' ni3al
ISSN号	1005-0302
中文摘要	The tensile and fracture behavior of DZ68 directionally solidified Ni-base superalloy was studied in the temperature range of room temperature (RT) to 1000 degrees C. The fracture mode was examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show the tensile strength and yield strength of DZ68 alloy increase slightly with increasing temperature, so that at 760 degrees C its reach maxima value: 1214 and 1019 MPa, respectively. When the experimental temperature is higher than 760 degrees C, the tensile and yield strengths decrease evidently and the ductility increases remarkably. The fractograph of fracture surface for the tensile specimen at room temperature shows a dimple-ductile fracture mode. The fractograph from 760 to 850 degrees C shows a slide fracture mode. The fractograph from 900 to 1000 degrees C exhibits a creep rupture mode with uneven deformation.
原文出处	://WOS:000272784100002
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32074]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	E. Z. Liu,S. C. Sun,G. F. Tu,et al. Tensile and Fracture Behavior of DZ68 Ni-base Superalloy[J]. Journal of Materials Science & Technology,2009,25(6):727-730.
APA	E. Z. Liu,S. C. Sun,G. F. Tu,Z. Zheng,X. R. Guan,&L. F. Zhang.(2009).Tensile and Fracture Behavior of DZ68 Ni-base Superalloy.Journal of Materials Science & Technology,25(6),727-730.
MLA	E. Z. Liu,et al."Tensile and Fracture Behavior of DZ68 Ni-base Superalloy".Journal of Materials Science & Technology 25.6(2009):727-730.