A crystallographic constitutive model for Ni3Al (L12)intermetallics

被引：15
|
作者：
Choi, YS
Dimiduk, DM
Uchic, MD
Parthasarathy, TA
机构：
[1] AFRL MLLM, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA
[2] UES Inc, Dayton, OH 45432 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 400卷
关键词：
Ni3Al; constitutive model; yield anomaly; cross-slip locking; exhaustion hardening;
D O I：
10.1016/j.msea.2005.03.040
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A constitutive model was developed in order to capture the unique thermo-mechanical flow behavior of U-structured Ni-3(Al, X) alloys. This model utilized a framework for flow-stress partitioning, which was previously proposed by Ezz and Hirsch, and incorporated a model for exhaustion hardening proposed by Caillard. The simulation results well represent the major aspects of the thermo-mechanical flow behavior of Ni-3(Al, X) alloys, such as a flow-stress anomaly, its strain dependence and a work-hardening rate anomaly. Selected limitations are discussed along with our current efforts toward extending the present model. Published by Elsevier B.V.
引用
收藏
页码：256 / 259
页数：4
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