球形压痕表征应力应变法测金属材料的力学性能
Ball Indentation Representative Stress-Strain Method Testing Mechanical Properties of Metals
摘 要
利用Matlab的优化函数改进了表征应力应变法的优化条件，并优化了表征应力应变法的计算流程，同时利用改进的弹塑性方程对屈服强度σy、应变硬化指数n和弹性模量E三个参数同时进行优化，从而确定了材料的力学性能参数，之后采用球形压痕表征应力应变法对P91钢的力学性能进行测试，并与单轴拉伸试验结果进行对比。结果表明：与单轴拉伸的试验结果相比，采用球形压痕表征应力应变法测得P91钢力学性能的精度较高，最大偏差值为12.11%。
表征应力应变法
力学性能
ball indentation
representative stress-strain method
mechanical property
Abstract
Matlab optimization function was used to improve optimization conditions of representative stress-stain method and optimize calculation flow of representative stress-true stain method, and yield strength σy, strain hardening exponent n and elastic modulus E three parameters were simultaneously optimized by using improved elastoplastic equation. Thus the mechanical property parameters were determined. Then the mechanical properties of P91 steel were tested by ball indentation representative stress-strain method and compared with uniaxial tensile test results. The results show that compared with uniaxial tensile test results, the mechanical properties of P91 tested by ball indentation representative stress-stain method had high accuracy and the maximum deviation was 12.11%.
中图分类号 TH140.7 DOI 10.11973/jxgccl201709021
所属栏目 物理模拟与数值模拟
基金项目
收稿日期 2017/1/5
修改稿日期 2017/7/17
网络出版日期
作者单位点击查看
备注孙明成(1981-),男,山东临沂人,高级工程师,博士
引用该论文: SUN Mingcheng,ZHANG Chaoqun,HAN Debin,LI Hongqiang. Ball Indentation Representative Stress-Strain Method Testing Mechanical Properties of Metals[J]. Materials for mechancial engineering, 2017, 41(9): 106～110
孙明成,张超群,韩德斌,李宏强. 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
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】崔航,陈怀宁,林泉洪. 材料局部性能的球形压痕评价技术研究进展[J].材料导报,2007,21(9):92-95.
【2】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.
【3】马德军.材料力学性能仪器化压入测试原理[M].北京:国防工业出版社,2010:1-2.
【4】AHN J H,KWON D. Derivation of plastic stress-strain relationship from ball indentation:Examination of strain definition and pileup effect[J]. Journal of Materials Research, 2001, 16(11):3170-3178.
【5】TABOR D. Hardness of Metals[M]. Oxford:Clarendon Press, 1951:44-51.
【6】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.
【7】KANG J J, BECKER A A,SUN W. Determining elastic-plastic properties from indentation data obtained from finite element simulations and experimental results[J]. International Journal of Mechanical Sciences, 2012, 62(1):34-46.
【8】CAO Y J, LU J. A new method to extract the plastic properties of metal materials from an instrumented spherical indentation loading curve[J].Acta Materialia, 2004, 52(13):4023-4032.
【9】CAO Y P, QIAN X Q, HUBER N. Spherical indentation into elastoplastic materials indentation-response based definitions of the representative strain[J].Materials Science and Engineering A, 2007, 454(16):1-13.
【10】SNEDDON I N. The relation between load and penetration in the axisymmetric boussinesq problem for a punch of arbitrary profile[J].International Journal Engineering Science, 1965, 3(1):47-57.
【11】HILL R, STORAKERS B A, ZDUNEK B. A theoretical study of the Brinell hardness test[J]. Proceedings of the Royal Society, 1989, 423:301-330.
【12】伍声宝,徐彤,喻灿,等. 采用球压痕法测16MnR钢的拉伸性能[J].机械工程材料,2015, 39(1):82-85.
【13】DAO M, CHOLLACOOP N, VLIET K J V, et al. Computational modeling of the forward and reverse problems in instrumented sharp indentation[J]. Acta Materialia, 2001, 49(19):3899-3918.
【2】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.
【3】马德军.材料力学性能仪器化压入测试原理[M].北京:国防工业出版社,2010:1-2.
【4】AHN J H,KWON D. Derivation of plastic stress-strain relationship from ball indentation:Examination of strain definition and pileup effect[J]. Journal of Materials Research, 2001, 16(11):3170-3178.
【5】TABOR D. Hardness of Metals[M]. Oxford:Clarendon Press, 1951:44-51.
【6】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.
【7】KANG J J, BECKER A A,SUN W. Determining elastic-plastic properties from indentation data obtained from finite element simulations and experimental results[J]. International Journal of Mechanical Sciences, 2012, 62(1):34-46.
【8】CAO Y J, LU J. A new method to extract the plastic properties of metal materials from an instrumented spherical indentation loading curve[J].Acta Materialia, 2004, 52(13):4023-4032.
【9】CAO Y P, QIAN X Q, HUBER N. Spherical indentation into elastoplastic materials indentation-response based definitions of the representative strain[J].Materials Science and Engineering A, 2007, 454(16):1-13.
【10】SNEDDON I N. The relation between load and penetration in the axisymmetric boussinesq problem for a punch of arbitrary profile[J].International Journal Engineering Science, 1965, 3(1):47-57.
【11】HILL R, STORAKERS B A, ZDUNEK B. A theoretical study of the Brinell hardness test[J]. Proceedings of the Royal Society, 1989, 423:301-330.
【12】伍声宝,徐彤,喻灿,等. 采用球压痕法测16MnR钢的拉伸性能[J].机械工程材料,2015, 39(1):82-85.
【13】DAO M, CHOLLACOOP N, VLIET K J V, et al. Computational modeling of the forward and reverse problems in instrumented sharp indentation[J]. Acta Materialia, 2001, 49(19):3899-3918.
相关信息
