基于压痕应变的不锈钢材料拉伸性能参数计算方法
Calculation of Tensile Property Parameters of Stainless Steel Materials Based on Indentation Strain
摘 要
建立连续球压痕试验三维有限元模型,通过单一变量法模拟了残余压痕应变与不同材料拉伸性能参数(弹性模量90~210 GPa、屈服强度180~300 MPa、应变硬化指数0.1~0.3)的关系;在125组拉伸性能参数组合下进行连续球压痕试验有限元模拟,得到基于残余压痕应变的材料拉伸性能参数计算公式并进行了试验验证。结果表明:残余压痕应变分别与弹性模量和屈服强度存在对数线性关系,其对数与应变硬化指数之间存在幂律关系;将连续球压痕试验测得的316L不锈钢的残余压痕应变代入材料拉伸性能参数计算公式,反演计算得到的弹性模量、屈服强度和应变硬化指数与拉伸试验结果的相对误差分别为1.50%,1.57%,0.22%,说明基于残余压痕应变的不锈钢材料拉伸性能参数计算方法可以满足工程需要。
有限元模拟
连续球压痕试验
拉伸性能参数
residual indentation strain
finite element simulation
continuous ball indentation test
tensile property parameter
Abstract
A three-dimensional finite element model for continuous ball indentation tests was established, and the relationship between residual indentation strains and different material tensile property parameters (elastic modulus of 90-210 GPa, yield strength of 180-300 MPa, strain hardening exponent of 0.1-0.3) was simulated by a single variable method. Finite element simulation of continuous ball indentation tests was performed under 125 sets of material tensile property parameter combinations, and formulas for calculating material tensile property parameters based on residual indentation strains were obtained and verified experimentally. The results show that there was a log-linear relationship between the residual indentation strain and the modulus of elasticity and yield strength, respectively, and a power-law relationship between the residual indentation strain logarithm and the strain hardening exponent. The residual indentation strains of 316L stainless steel measured by the continuous ball indentation test were substituted into the material tensile property parameter calculation formula, and the relative errors between the elastic modulus, yield strength, and strain hardening exponent obtained by inversion and the tensile test results were 1.50%, 1.57%, and 0.22%, respectively, indicating that the stainless steel material tensile property parameter calculation method based on the residual indentation strain could meet the engineering needs.
中图分类号 TG142.25 TH140.7 DOI 10.11973/jxgccl202211015
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目(52075434);陕西省重点研发计划项目(2021KW-36)
收稿日期 2021/10/6
修改稿日期 2022/8/2
网络出版日期
作者单位点击查看
备注薛河(1961-),男,江苏扬州人,教授,博士
引用该论文: XUE He,LU Jingzhi,JIA Yulei,WANG Shuang,WANG Zheng. Calculation of Tensile Property Parameters of Stainless Steel Materials Based on Indentation Strain[J]. Materials for mechancial engineering, 2022, 46(11): 92～96
薛河,路景智,贾宇磊,王双,王正. 基于压痕应变的不锈钢材料拉伸性能参数计算方法[J]. 机械工程材料, 2022, 46(11): 92～96
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【2】YE D Y,MI F,LIU J Z,et al.Use of instrumented indentation testing to study local mechanical properties of 304L SS welded joints subjected to low-cycle fatigue loadings[J].Materials Science and Engineering:A,2013,564:76-84.
【3】ZOU B,GUAN K S,WU S B.Determination of area reduction rate by continuous ball indentation test[J].International Journal of Pressure Vessels and Piping,2016,139/140:220-227.
【4】张泰华.微/纳米力学测试技术:仪器化压入的测量、分析、应用及其标准化[M].北京:科学出版社,2013. ZHANG T H.Micro/nano mechanical testing techniques: Measurement, analysis, application and standardization of instrumental indentation [M].Beijing:Science Press,2013.
【5】黄礼洋,关凯书.球压痕试验法评价金属材料的强度[J].机械工程材料,2021,45(1):85-91. HUANG L Y,GUAN K S.Strength evaluation of metal materials by spherical indentation test method[J].Materials for Mechanical Engineering,2021,45(1):85-91.
【6】WALLEY S M.Historical origins of indentation hardness testing[J].Materials Science and Technology,2012,28(9/10):1028-1044.
【7】DOERNER M F,NIX W D.A method for interpreting the data from depth-sensing indentation instruments[J].Journal of Materials Research,1986,1(4):601-609.
【8】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.
【9】HAGGAG F Y M,LUCAS G E.Determination of Lüders strains and flow properties in steels from hardness/microhardness tests[J].Metallurgical Transactions A,1983,14(8):1607-1613.
【10】HAGGAG F M,BYUN T S,HONG J H,et al.Indentation-energy-to-fracture (IEF) parameter for characterization of DBTT in carbon steels using nondestructive automated ball indentation (ABI) technique[J].Scripta Materialia,1998,38(4):645-651.
【11】孙明成,张超群,韩德斌,等.球形压痕表征应力应变法测金属材料的力学性能[J].机械工程材料,2017,41(9):106-110. SUN M C,ZHANG C Q,HAN D B,et al.Ball indentation representative stress-strain method testing mechanical properties of metals[J].Materials for Mechanical Engineering,2017,41(9):106-110.
【12】金桩,赵建平.微载荷连续球压痕法评价金属材料的屈服强度和应变硬化指数[J].机械工程材料,2018,42(1):72-77. JIN Z,ZHAO J P.Yield strength and strain hardening exponent of metal material evaluated by micro-load continuous ball indentation method[J].Materials for Mechanical Engineering,2018,42(1):72-77.
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【16】魏中坤,伍声宝,关凯书.球压痕法评价16MnR钢的断裂韧性[J].机械工程材料,2016,40(1):32-34. WEI Z K,WU S B,GUAN K S.Fracture toughness of 16MnR steel evaluated by ball indentation method[J].Materials for Mechanical Engineering,2016,40(1):32-34.
【17】关凯书,邹镔,伍声宝.连续球压痕法评价钢的塑性[J].机械工程材料,2016,40(9):18-21. GUAN K S,ZOU B,WU S B.Evaluating plasticity of steels through continuous ball indentation test[J].Materials for Mechanical Engineering,2016,40(9):18-21.
【18】瞿力铮,吴益文,单清群,等.连续球压痕法表征幂硬化金属材料拉伸性能的有限元模拟[J].机械工程材料,2019,43(11):47-52. QU L Z,WU Y W,SHAN Q Q,et al.Finite element simulation of tensile properties of power law hardening metal materials evaluated by continuous ball indentation technique[J].Materials for Mechanical Engineering,2019,43(11):47-52.
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