The influence of grain size and texture on the mechanical response of high purity hafnium

被引：43
作者：
Cerreta, E.
Yablinsky, C. A.
Gray, G. T., III
Vogel, S. C.
Brown, D. W.
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[2] Ohio State Univ, Dept Mat Sci, Columbus, OH 43210 USA
[3] Los Alamos Natl Lab, LANSCE LC, Los Alamos, NM 87545 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 456卷 / 1-2期
关键词：
mechanical properties; grain size effects; texture; hafnium;
D O I：
10.1016/j.msea.2006.11.111
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanical behavior of hafnium is influenced by texture, strain rate, temperature, chemistry, and stress state; however the effects of microstructure remain poorly understood. As is observed in other group IVb elements, such as titanium and zirconium, deformation in hafnium at quasi-static and dynamic strain rates occurs through a combination of prismatic slip, pyramidal slip, and twinning. For titanium and zirconium, the mechanical behavior has been previously shown to be highly dependent upon the average grain size of the material. Here, the effects of grain size on the mechanical response of high purity hafnium tested in compression are systematically probed and the flow stress and work hardening behavior is correlated with the substructural and textural evolution during deformation. The influence of strain rate, temperature, and texture as a function of the microstructure is examined and Hall-Petch constants for hafnium are calculated. (C) 2006 Elsevier B.V. All rights reserved.
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页码：243 / 251
页数：9
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