首页|TC17钛合金表面残余应力的点阵式维氏压痕测试

TC17钛合金表面残余应力的点阵式维氏压痕测试

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采用点阵式维氏压痕测试方法得到TC17钛合金表面12个测试点的载荷-深度曲线;通过等效材料维氏压痕模型计算合金表面12个测试点的双向残余应力和单向残余应力，将残余应力值代入ANSYS 19。2有限元分析软件中得到载荷-深度曲线，并进行试验验证。结果表明:试验得到表面不同测试点的应力均为残余拉应力;采用有限元方法模拟得到双向残余应力和单向残余应力下的载荷-深度曲线与试验结果吻合较好，载荷-深度曲线的加载曲率的相对误差均小于1。5％，等效材料维氏压痕模型可以准确地预测合金表层单向残余应力和双向残余应力分布。
Lattice Vickers Indentation Testing of Residual Stress on Surface of TC17 Titanium Alloy
The load-depth curves of 12 test points on the surface of TC17 titanium alloy were obtained by lattice Vickers indentation testing method.The bidirectional and unidirectional residual stresses of 12 test points on the alloy surface were calculated by equivalent material Vickers indentation model.The load-depth curves were obtained by substituting the residual stress values into the finite element analysis software ANSYS 19.2,and were verified by tests.The results show that the stresses at different test points on the surface were all residual tensile stresses by testing.The load-depth curves under both the bidirectional residual stress and the unidirectional residual stress simulated by finite element method were in good agreement with test results,and the relative errors of the loading curvature of the load-depth curves were less than 1.5％,which indicated that the equivalent material Vickers indentation model could accurately predict the distribution of unidirectional residual stress and bidirectional residual stress on the alloy surface layer.

TC17 titanium alloyresidual stresslattice indentation testequivalent material Vickers indentation modelfinite element analysis

李虎、陈辉、彭晖、傅作华、孟铮、黄龙超、肖继玲、赵鹏辉、任智勤、罗贤凯

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长沙理工大学土木工程学院,长沙 410114

西部超导材料科技股份有限公司,陕西航空特种金属材料创新中心,西安 710018

浙江交工集团股份有限公司,杭州 310051

TC17钛合金 残余应力 点阵式压痕测试 等效材料维氏压痕模型 有限元分析

国家自然科学基金资助项目国家自然科学基金资助项目湖南省自然科学基金资助项目湖南省教育厅优秀青年基金资助项目长沙理工大学研究生科研创新项目

52178186122320042021JJ4055320B028CXCLY2022032

2024

10.11973/jxgccl230299

机械工程材料
上海材料研究所

机械工程材料

CSTPCD北大核心
影响因子：0.558
ISSN：1000-3738
年,卷(期)：2024.48(7)
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