| 表面强化对工业纯钛显微组织的影响 |
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| 引用本文： | 张建斌,马勤,周琦,王静宜. 表面强化对工业纯钛显微组织的影响[J]. 中国有色金属学报, 2001, 11(6): 1037-1040 |
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| 作者姓名： | 张建斌 马勤 周琦 王静宜 |
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| 作者单位： | 1. 甘肃工业大学材料科学与工程学院,
2. 西安工业学院材料工程系, |
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| 基金项目： | 国家自然科学基金资助项目(59571025) |
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| 摘 要： | 工业纯钛经喷丸，滚压强化后，疲劳强度得到不同程度的提高，逐层TEM亚结构对比分析结果表明，工业纯钛疲劳强度的提高和强化层组织中孪晶的形成有关，工业纯钛疲劳前后组织中主要是位错数量的变化，而强化试样疲劳前后组织的结构既有位错，孪晶数量的变化，又有孪晶－晶界，孪晶－孪晶之间的交互作用，喷丸较滚压强化效果显著的部分原因是表层形成了准孪晶栅栏。
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| 关 键 词： | 孪晶 疲劳 表面强化 工业纯钛 显微组织 |
| 文章编号： | 1004-0609(2001)06-1037-04 |
| 修稿时间： | 2000-12-10 |
Effect of surface plastic deformation on microstructure of commercial purity titanium |
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| ZHANG Jian bin ,MA Qin ,ZHOU Qi ,WANG Jing yi. Effect of surface plastic deformation on microstructure of commercial purity titanium[J]. The Chinese Journal of Nonferrous Metals, 2001, 11(6): 1037-1040 |
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| Authors: | ZHANG Jian bin MA Qin ZHOU Qi WANG Jing yi |
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| Affiliation: | ZHANG Jian bin 1,MA Qin 1,ZHOU Qi 1,WANG Jing yi 2 |
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| Abstract: | The fatigue strength of commercial purity titanium was improved through shot peening or cold rolling treatment. By means of TEM methods to analyze the various layer substructures, the following results were obtained: (1) The improvement of fatigue strength of commercial purity titanium is related to the formation of twins in strengthened layer; (2) Before or after fatigue, the numbers of dislocation are different in commercial purity titanium, but the samples strengthened by shot peening or cold rolling not only have twin shape and number change, but also have interactions between twin grain boundary and twin twin; (3) The strengthening effects of shot peening are more obvious than that of cold rolling is partly for the formation of quasi twin paling in the surface. |
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| Keywords: | titanium twinning fatigue strengthening |
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