| 稀土元素Ce对Ti-Ni形状记忆合金力学性能的影响 |
| |
| 引用本文： | 刘爱莲,徐家文,孙俭峰,蔡伟.稀土元素Ce对Ti-Ni形状记忆合金力学性能的影响[J].黑龙江科技学院学报,2009,19(5):335-338. |
| |
| 作者姓名： | 刘爱莲 徐家文 孙俭峰 蔡伟 |
| |
| 作者单位： | 1. 黑龙江科技学院,材料科学与工程学院,哈尔滨,150027
2. 哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 采用拉伸试验研究了稀土元素Ce对Ti—Ni合金力学性能的影响，通过扫描电镜对Ti—Ni—Ce合金的断口形貌进行观察。实验结果表明，添加稀土元素Ce使Ti—Ni合金的应力-应变行为有显著影响。在马氏体状态拉伸时，当x（Ce）低于0．5％时，合金的应力-应变曲线出现明显的屈服平台；而当％（Ce）超过1％时，合金的应力-应变曲线上无明显的屈服平台，以连续屈服和强烈的加工硬化为特征。随Ce加入量增加，合金的延伸率降低、脆性增大，断裂类型由微孔聚集型的韧性断裂逐渐转变为沿晶脆性断裂。因此，Ce的加入量不能超过1％，否则将损害Ti—Ni合金的使用性能。
|
| 关 键 词： | Ti—Ni形状记忆合金 稀土Ce 力学性能 断口形貌 |
Effect of rare earth Ce addition on mechanical properties of Ti-Ni shape memory alloys |
| |
| LIU Ailian,XU Jiawen,SUN Jianfeng,CAI Wei.Effect of rare earth Ce addition on mechanical properties of Ti-Ni shape memory alloys[J].Journal of Heilongjiang Institute of Science and Technology,2009,19(5):335-338. |
| |
| Authors: | LIU Ailian XU Jiawen SUN Jianfeng CAI Wei |
| |
| Institution: | LIU Ailian1,XU Jiawen1,SUN Jianfeng1,CAI Wei2(1.College of Materials Science and Engineering,Heilongjiang Institute of Science and Technology,Harbin 150027,China,2.College of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China) |
| |
| Abstract: | This paper presents the study of effect of Ce addition on the mechanical properties of Ti-Ni(x(Ni)50.7%) alloy by tensile tests and investigation into the fractuse morphology of Ti-Ni-Ce alloys by SEM in the paper.The results show that Ce addition gives an evident effect on the stress-strain curves of Ti-Ni alloys.When the alloys are subjected to tension under martensitic state,the stress-strain curve of Ti-Ni alloy with 0.5% x(Ce) or less gives evident stress plateau;the tensile stress-strain curve of Ti-N... |
| |
| Keywords: | Ti-Ni shape memory alloy rare earth Ce mechanical property fracture morphology |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
