| Ti单晶[0001]位向循环变形的SEM观察 |
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| 引用本文： | 谭晓礼,顾海澄. Ti单晶[0001]位向循环变形的SEM观察[J]. 材料研究学报, 1995, 9(2): 103-106 |
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| 作者姓名： | 谭晓礼 顾海澄 |
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| 作者单位： | 西安交通大学金属材料及强度研究所 |
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| 摘 要： | 用区域熔炼高纯Ｔｉ经应变退火获得单晶，定向切割出的［０００１］位向单晶试样在ＳＥＭ上观察循环变形时表面形貌变化。结果表明，循环应变几乎全部是｛１０１２｝，｛１１２２｝和｛１１２４｝孪晶组成的循环孪晶带的贡献，疲劳裂纹在孪晶带部沿｛１０１２｝孪晶和｛１１２２｝孪晶效界萌生。
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| 关 键 词： | 钛单晶 循环变形 孪晶带 |
| 收稿时间： | 1995-04-25 |
| 修稿时间： | 1995-04-25 |
SEM OBSERVATIONS ON CYCLIC DEFORMATION PROCESS OF Ti MONOCRYSTAL STRESSED ALONG [0001] |
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| TAN Xiaoli,GU Haicheng. SEM OBSERVATIONS ON CYCLIC DEFORMATION PROCESS OF Ti MONOCRYSTAL STRESSED ALONG [0001][J]. Chinese Journal of Materials Research, 1995, 9(2): 103-106 |
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| Authors: | TAN Xiaoli GU Haicheng |
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| Affiliation: | TAN Xiaoli; GU Haicheng(Xi'an Jiaotong Universitv)(Research Institute for Strength of Metals) |
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| Abstract: | Monocrystals were grown from the zone-melting refined titanium. A specimen with the loading axis parallel to [0001] direction was cyclically deformed within the chamber of a scanning electron microscope. The results indicated that the cyclic strain was accommodated almost entirely by twin bands consisted of {1012}, {1122} and{1124}twins. Fatigue cracks were found to initiate along the midrib of twin bands. |
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| Keywords: | itanium monocrystal cyclic deformation. twin bands |
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