Microindentation study of Ti-6Al-4V alloy

被引：31
作者：
Cai, Jun [1 ]
Li, Fuguo [1 ]
Liu, Taiying [1 ]
Chen, Bo [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China
来源：
MATERIALS & DESIGN | 2011年 / 32卷 / 05期
关键词：
Non-ferrous metals and alloys; Plastic behavior; Non-destructive testing; CORRELATION-COEFFICIENT; DEFORMATION-BEHAVIOR; ELASTIC-MODULUS; INDENTATION; HARDNESS; SIZE; PREDICT; MODEL;
D O I：
10.1016/j.matdes.2011.01.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to study the micromechanical behavior of Ti-6Al-4V alloy, microindentation experiments were performed with five different maximum loads of 100, 150, 200, 250 and 300 mN, and with three loading speeds of 6.4560, 7.7473 and 9.6841 mN/s respectively. The experimental results revealed that loading speed has little influence on microhardness and Young's modulus. Microindentation hardness experiments showed strong indentation size effects, i.e. increase of indentation hardness with the decrease of indentation load or depth. Then microindentation constitutive equation that described the stress as a function of the strain was proposed through dimensional analysis. And the finite element simulation results showed that the predicted computational indentation data from developed constitutive equation can track the microindentation experimental data of Ti-6Al-4V alloy. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2756 / 2762
页数：7
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