| 纯钛BT1-0低周疲劳损伤机理的研究 |
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| 引用本文： | 丰崇友,王兴国,于海生,佟立丰,刘义虎.纯钛BT1-0低周疲劳损伤机理的研究[J].佳木斯大学学报,2006,24(1):22-24. |
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| 作者姓名： | 丰崇友 王兴国 于海生 佟立丰 刘义虎 |
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| 作者单位： | 佳木斯大学材料科学与工程学院 黑龙江佳木斯154007 |
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| 基金项目： | 黑龙江省高校骨干教师创新资助计划 |
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| 摘 要： | 在室温拉-扭载荷下研究了纯钛BT1-0低周疲劳循环变形的宏观特性,结果显示材料的循环变形行为与应变幅值有关,遵循Coffin-Manson关系.通过透射电镜观察了在低周疲劳过程中位错组态,TEM观察表明:材料在比例载荷的损伤变形为滑移位错;在非比例载荷形成了孪晶结构,孪晶形态和尺寸与相位角相关.分析了该材料在低周疲劳损伤的微观行为.
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| 关 键 词： | 低周疲劳 纯钛BT1-0 位错 孪晶 |
| 文章编号： | 1008-1402（2006）01-0022-03 |
| 收稿时间： | 2005-10-29 |
| 修稿时间： | 2005年10月29 |
Study on Damage Mechanism of LCF of Pure Titanium BT1 - 0 |
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| FENG Chong-you,WANG Xing-guo,YU Hai-sheng,TONG Li-feng,LIU Yi-hu.Study on Damage Mechanism of LCF of Pure Titanium BT1 - 0[J].Journal of Jiamusi University(Natural Science Edition),2006,24(1):22-24. |
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| Authors: | FENG Chong-you WANG Xing-guo YU Hai-sheng TONG Li-feng LIU Yi-hu |
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| Institution: | College of Matcrial Science and Engineering ,Jiamusi University,Jiamusi 154007,China |
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| Abstract: | Low cycle fatigue properties of the pure Titanium BT1-0 were investigated using symmetric tension-torsion test at room temperature.The results indicate that the material displays cyclic deformation behavior related with cycle plastic strain ranges and it obeys Coffin-Manson relationship.The Transmission Electron Microscope(TEM) observation on the dislocation sub-structures of pure Titanium BT1-0 shows that the material damage deformation mainly is slippage under proportional low-cycle loadings and twin under non-proportional low-cycle loading,and the twin sub-structure is correlated with micro-size and phase angle.The damage micro behavior of low cycle fatigue of pure Titanium BT1-0 is analyzed as well. |
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| Keywords: | LCF pure Titanium BT1-0 dislocation twin |
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