| 反向法确定钨合金基体细观性能及其宏观验证 |
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| 引用本文： | 刘筱玲,宋顺成,史洪刚.反向法确定钨合金基体细观性能及其宏观验证[J].材料科学与工艺,2009(5):636-640. |
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| 作者姓名： | 刘筱玲 宋顺成 史洪刚 |
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| 作者单位： | 西南科技大学土木工程与建筑学院;西南交通大学力学与工程学院;北京理工大学爆炸科学与技术国家重点实验室;中国兵器科学研究院宁波分院; |
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| 基金项目： | 西南科技大学博士基金项目(08zx7115) |
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| 摘 要： | 为了确定钨合金基体相的细观性能,采用纳米压痕实验测试了钨合金材料中基体相的细观硬度与弹性模量.利用反向确定法给出了钨合金材料中基体相的细观弹、塑性性质,根据纳米压痕实验中得到的载荷-位移关系,通过三维有限元计算给出了基体相的原位细观屈服强度和硬化模量.为探讨反向法确定钨合金基体细观性能的有效性,采用宏观实验给出了其宏观验证.宏观验证结果表明,用反向法确定钨合金基体材料的细观弹、塑性性质是可靠的.
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| 关 键 词： | 钨合金 细观力学性能 纳米压痕 有限元 反向法 |
Determination of matrix micro-properties of tungsten alloy by inverse method and verification for its validity |
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| LIU Xiao-ling,SONG Shun-cheng,SHI Hong-gang.Determination of matrix micro-properties of tungsten alloy by inverse method and verification for its validity[J].Materials Science and Technology,2009(5):636-640. |
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| Authors: | LIU Xiao-ling SONG Shun-cheng SHI Hong-gang |
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| Affiliation: | LIU Xiao-ling1,SONG Shun-cheng2,3,SHI Hong-gang4(1.School of Civil Engineering , Architecture,Southwest University of Science , Technology,Mianyang 621010,China,2.School of Mechanics , Engineering,Southwest Jiaotong University,Chengdu 610031,3.State Key Lab of Explosion Science , Technology,Beijing Institute of Technology,Beijing 100081,4.Ningbo Sub-Academy,National Ordnance Science Research Academy,Ningbo 315103,China) |
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| Abstract: | The microhardness and micro elastic modulus of matrix in tungsten alloy were respectively measured.The micro elastic-plastic properties of the matrix in tungsten alloy were obtained using the inverse method.According to the load-displacement relationships obtained from nano-indentation experiments,the parameters of micro yield strength and microhardening modulus of matrix in the tungsten alloy were given through three-dimensional finite element computations.Macro experiments were performed to verify the val... |
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| Keywords: | tungsten alloy micro-mechanical property nano-indentation finite element method inverse method |
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