| 钨合金基体相原位细观性能的测定 |
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| 引用本文： | 刘筱玲,宋顺成,黄伟,史洪刚.钨合金基体相原位细观性能的测定[J].西南交通大学学报,2007,42(4):447-451. |
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| 作者姓名： | 刘筱玲 宋顺成 黄伟 史洪刚 |
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| 作者单位： | 1. 西南交通大学应用力学与工程系,四川,成都,610031
2. 中国兵器科学研究院宁波分院,浙江,宁波,315103 |
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| 基金项目： | 感谢西南交通大学博士创新基金(X1200512470102)的资助. |
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| 摘 要： | 为研究钨合金材料基体相的细观本构关系,采用纳米压痕实验,测定了钨合金基体相微观硬度和平均弹性模量.由纳米压痕实验得到的载荷-位移关系,利用材料的弹塑性硬化模型,经有限元计算,得到了基体相细观屈服强度、硬化模量、弹塑性性能参数和应力-应变关系曲线.分析结果表明,合金成分及变形强化是影响钨合金强度和硬度的两个基本因素.钨合金基体相微观强度和硬度随变形量或钨含量增大而增大.
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| 关 键 词： | 钨合金 基体 细观力学性能 纳米压痕实验 有限元 |
| 文章编号： | 0258-2724（2007）04-0447-05 |
| 修稿时间： | 2006-11-10 |
In Situ Determination of Micro-properties of Tungsten Alloy Matrix |
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| LIU Xiaoling,SONG Shuncheng,HUANG Wei,SHI Honggang.In Situ Determination of Micro-properties of Tungsten Alloy Matrix[J].Journal of Southwest Jiaotong University,2007,42(4):447-451. |
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| Authors: | LIU Xiaoling SONG Shuncheng HUANG Wei SHI Honggang |
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| Institution: | 1. Dept. of Appl. Mechanics and Eng., Southwest Jiaotong University, Chengdu 610031, China; 2. Ningbo Branch of Ordnance Science Institute of China, Ningbo 315103, China |
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| Abstract: | To obtain the micro-properties of tungsten alloy matrix,its micro-hardness and micro-elastic modulus were measured by nano-indentation experiments.The micro-yield strength,micro-hardening modulus,elastoplastic parameters and the stress-strain relationship of the tungsten alloy matrix were determined using the finite element method,a hardening model,and the load-displacement relationship obtained from nano-indentation experiments.Analyses of the results show that the composition of the alloy and deformation strengthening are two basic factors to influence the micro-properties of tungsten alloy matrix.The micro-hardness and micro-yield strength of the alloy matrix increase with an increase in deformation or in the concentration of tungsten. |
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| Keywords: | tungsten alloy matrix micro-mechanical property nano-indentation experiment finite element method |
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