| 应变速率对Sn-9Zn共晶合金拉伸性能的影响 |
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| 引用本文： | 张黎,冼爱平,王中光,韩恩厚,尚建库.应变速率对Sn-9Zn共晶合金拉伸性能的影响[J].金属学报,2004,40(11):1151-1154. |
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| 作者姓名： | 张黎 冼爱平 王中光 韩恩厚 尚建库 |
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| 作者单位： | 1. 中国科学院金属研究所,沈阳,110016
2. 中国科学院金属研究所,沈阳,110016;Department of Materials Science and Engineering University of Illiois at Urbana Champin,Urbana IL61801 |
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| 基金项目： | 国家自然科学基金项目50228101，国家高技术研究发展计划项目2002AA322040资助 |
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| 摘 要： | Sn—9Zn合金室温的拉伸曲线上存在一个较宽的无加工硬化区域，合金的最大拉伸应力对应变速率敏感，随着应变速率的增加，最大拉伸应力增大，对应变速率与抗拉强度关系的拟合获得了这种合金的应变速率敏感指数为0．097．SEM观察表明，裂纹在棒状Zn与基体的界面处萌生．合金的拉伸断口特征随应变速率的增加从典型的韧窝状延性断裂向半解理脆性断裂过渡。
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| 关 键 词： | 无铅焊料 Sn—9Zn合金 力学性能 应变速率 |
| 文章编号： | 0412-1961(2004)11-1151-04 |
EFFECT OF STRAIN RATE ON THE TENSILE PROPERTIES OF Sn-9Zn EUTECTIC ALLOY |
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| ZHANG Li,XIAN Aiping,WANG Zhongguang,HAN Enhou,SHANG
Institute of Metal Research,The Chinese Academy of Sciences,Shenyang.EFFECT OF STRAIN RATE ON THE TENSILE PROPERTIES OF Sn-9Zn EUTECTIC ALLOY[J].Acta Metallurgica Sinica,2004,40(11):1151-1154. |
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| Authors: | ZHANG Li XIAN Aiping WANG Zhongguang HAN Enhou SHANG
Institute of Metal Research The Chinese Academy of Sciences Shenyang |
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| Affiliation: | ZHANG Li,XIAN Aiping,WANG Zhongguang,HAN Enhou,SHANG
1) Institute of Metal Research,The Chinese Academy of Sciences,Shenyang 110016
2) Department of Materials Science and Engineering,University of Illiois at Urbana Champin,Urbana,IL61801 |
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| Abstract: | Tensile experiments of Sn-9Zn eutectic alloy at room temperature and different strain rates revealed that there is a quite wide zone without work hardening in the tensile curve, and the ultimate tensile stress (UTS)of the alloy is dependent on the strain rate. With increasing of the strain rate, UTS of the alloy is increased. The sensitivity exponent of the strain rate obtained is 0.097 by the linear fitting of the strain rate and UTS, while the elongation of the alloy is independent on the strain rate. SEM observations showed that in the case of low strain rate, the fracture mode of the solder alloy is typical ductile, but there is a tendency from ductile to brittle fracture with increasing the strain rate. |
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| Keywords: | Pb-free solder Sn-9Zn alloy mechanical property strain rate |
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