Higher fatigue cracking resistance of twin boundaries than grain boundaries in Cu bicrystals

L.L. Li; Z.J. Zhang; P. Zhang

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Higher fatigue cracking resistance of twin boundaries than grain boundaries in Cu bicrystals

机译：Cu双晶中双晶界的耐疲劳裂纹性比晶界高

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Two kinds of Cu bicrystals, with a high-energy grain boundary (GB) and a coherent twin boundary (TB) parallel to the loading direction respectively, were cyclically deformed to reveal the fatigue cracking mechanisms. It is shown that intergranular fatigue cracking occurred firstly in the bicrystal with the GB, while the persistent slip bands became the preferential cracking sites in the bicrystal with TB. These results indicate that the TB has an intrinsically higher fatigue cracking resistance than the GB.

机译：两种Cu双晶分别具有高能晶界（GB）和相干双晶界（TB）平行于加载方向，循环变形以揭示疲劳裂纹形成机理。结果表明，在具有GB的双晶中，晶间疲劳开裂首先发生，而持久滑移带成为具有TB的双晶中的优先开裂点。这些结果表明，TB本质上比GB具有更高的抗疲劳断裂性。

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《Scripta materialia》 |2011年第6期|共4页
作者
L.L. Li; Z.J. Zhang; P. Zhang;
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正文语种 eng
中图分类冶金工业;
关键词
Bicrystal; Twin boundary; Grain boundary; Fatigue cracking; Persistent slip bands;

机译：双晶;双晶界;晶界;疲劳裂纹;持久滑带;

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1. Bi在Cu双晶中的非平衡晶界偏聚 [J] . 杨武强, 徐敏, 梁剑雄, 中国有色金属学报（英文版） . 2014,第012期
2. Higher fatigue cracking resistance of twin boundaries than grain boundaries in Cu bicrystals [J] . L.L. Li, Z.J. Zhang, P. Zhang Scripta materialia . 2011,第6期

机译：Cu双晶中双晶界的耐疲劳裂纹性比晶界高
3. Difference in fatigue cracking behaviors of Cu bicrystals with the same component grains but different twin boundaries [J] . Li L. L., Zhang Z. J., Zhang P., Scripta materialia . 2015,第Null期

机译：相同晶粒但双晶界不同的Cu双晶疲劳裂纹行为的差异
4. An experimental methodology to quantify the resistance of grain boundaries to fatigue crack growth in an AA2024 T351 Al-Cu Alloy [J] . Wei Wen, Pei Cai, Alfonso H.W. Ngan, Materials Science and Engineering . 2016,第juna1期

机译：一种量化AA2024 T351 Al-Cu合金中晶界对疲劳裂纹扩展的抵抗力的实验方法
5. Grain boundaries and twin boundaries: Stronger or weaker to resist fatigue cracking? [C] . Zhe-Feng ZHANG, Zhen-Jun ZHANG, Peng ZHANG, Japan-China Joint Symposium on Fatigue of Engineering Materials and Structures . 2014

机译：谷物边界和双界：抗拒疲劳裂缝的更强或更弱？
6. Fatigue modeling of u720 --- A multi-scale approach in understanding grain boundary effects on crack initiation. [D] . Sangid, Michael D. 2010

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7. Evaluation of Grain Boundary Network and Improvement of Intergranular Cracking Resistance in 316L Stainless Steel after Grain Boundary Engineering [O] . Tingguang Liu, Shuang Xia, Qin Bai, 2019

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8. Controllable fatigue cracking mechanisms of copper bicrystals with a coherent twin boundary [O] . L.L. Li, Z.J. Zhang, P Zhang, 2014

机译：具有相干双边界的铜双边界的可控疲劳裂解机制
9. From meandering to straight grain boundaries: Improving the structures of artificially-induced grain boundaries in superconducting YBa2Cu3O(y) bicrystals [R] . Zhang, X. F. , Todt, V. R. , Miller, D. J. 1997

机译：从曲折到直晶界：改善超导YBa2Cu3O（y）双晶中人工诱导晶界的结构

Higher fatigue cracking resistance of twin boundaries than grain boundaries in Cu bicrystals

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