金属材料弹性模量的仪器化压入测试
Measurement of Elastic Modulus of Metals by Instrumented Indentation
摘 要
对6061铝合金、S45C碳钢、SS316不锈钢、SS304不锈钢和黄铜五种金属材料进行了仪器化压入测试, 采用纯能量法和Oliver-Pharr方法计算得到各材料的弹性模量, 并与标准单轴拉伸试验结果进行了对比。结果表明: 采用纯能量法得到的五种金属弹性模量与拉伸试验结果的相对误差分别为7.65%, 3.99%, 3.25%, -1.12%和16.47%, 比Oliver-Pharr方法具有更高的测试精度, 可满足金属材料弹性模量测试的工程应用要求。
弹性模量
测试精度
金属材料
instrumented indentation
elastic modulus
measurement precision
metal material
Abstract
Instrumented indentation tests were applied to five metals, 6061 aluminum alloy, S45C carbon steel,SS316 stainless steel, SS304 stainless steel and brass, and then the elastic modulus of five metals were calculated by Energy-based method and and Oliver-Pharr method. The calculated results by two method were compared to that from standard uniaxial tensile test. The results show that the relative errors of elastic modulus between Energy-based method and tensile test were 7.65%,3.99%,3.25%,-1.12% and 16.47%, respectively. Compared with the Oliver-Pharr method, Energy-based method possessed higher precision and were better enough to satisfy the need of engineering application.
中图分类号 TH140 DOI 10.11973/jxgccl201508010
所属栏目 新材料 新工艺
基金项目
收稿日期 2014/3/31
修改稿日期 2015/5/12
网络出版日期
作者单位点击查看
备注陈伟(1986-), 男, 山东菏泽人, 博士研究生。
引用该论文: CHEN Wei,MA De-jun,WANG Jia-liang,HUANG Yong. Measurement of Elastic Modulus of Metals by Instrumented Indentation[J]. Materials for mechancial engineering, 2015, 39(8): 47～50
陈伟,马德军,王家梁,黄勇. 金属材料弹性模量的仪器化压入测试[J]. 机械工程材料, 2015, 39(8): 47～50
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参考文献
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【2】刘美华,李鸿琦,王静,等. 纳米压痕测量精度的影响因素［J］. 机械工程材料, 2008,32(8): 4-7.
【3】石广丰,徐志伟,史国权,等. 中阶梯光栅铝膜的纳米压入测试［J］. 机械工程材料, 2013, 37(7): 94-97.
【4】TRICOTEAUX A, DUARTE G, CHICOT D, et al. Depth-sensing indentation modeling for determination of elastic modulus of thin films ［J］. Mechanics of Materials, 2010, 42(2): 166-174.
【5】任明星,李邦盛,杨闯,等. 纳米压痕法测定微铸件硬度及弹性模量［J］. 中国有色金属学报, 2008, 18(2): 231-236.
【6】崔航,陈怀宁,陈静,等. 球形压痕法评价材料屈服强度和应变硬化指数的有限元分析［J］. 金属学报, 2009, 45(2): 189-194.
【7】OLIVER W C, PHARR G M. An improved technique for determining hardness and elastic-modulus using load and displacement sensing indentation experiments ［J］. Journal of Materials Research, 1992, 7(6): 1564-1583.
【8】MA D, ONG C W. Analytical relationship among nominal hardness, reduced Young’s modulus, the work of indentation, and strain hardening exponent ［J］. Journal of Materials Science, 2010, 45(9): 2530-2533.
【9】MA D, ONG C W. Further analysis of energy-based indentation relationship among Young’s modulus, nominal hardness, and indentation work ［J］. Journal of Materials Research, 2010, 25(6): 1131-1136.
【10】马德军,郭俊宏,陈伟,等. 高精度仪器化压入仪设计与应用［J］. 仪器仪表学报, 2012, 33(8): 1889-1897.
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