Negative lateral strain ratio induced by deformation twinning in magnesium alloy AZ31

Y.B.Chun; C.H.J.Davies

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Negative lateral strain ratio induced by deformation twinning in magnesium alloy AZ31

机译：变形变形孪晶在镁合金AZ31中引起的负横向应变比

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We show that any highly textured metal that deforms predominantly by deformation twinning can exhibit a negative lateral strain ratio under uni-axial loading. Theoretical calculations of lateral strains caused by tension twinning on the {1012} plane in a magnesium single crystal predicts this behavior, and we verify this by direct measurements of lateral strains in highly textured commercial magnesium alloy AZ31 deformed in uniaxial compression. The R values of AZ31 plate compressed in the rolling direction at -100 ℃ and 25 ℃ show negative values at compressive strain up to ~0.03, and increase with strain and temperature. These evolution trends of R value are found be closely related to activity of {1012} twinning. This approach is extended to compression twinning in zinc, for which theoretical calculations show the same effect on lateral strain ratio.

机译：我们表明，任何主要通过变形孪生变形的高度织构化的金属在单轴载荷下都可以表现出负的横向应变比。理论上由镁单晶在{1012}平面上的张力孪生引起的横向应变的理论计算可预测此行为，我们通过直接测量单轴压缩变形的高织构化镁合金AZ31的横向应变来验证这一点。在-100℃和25℃下沿轧制方向压缩的AZ31板的R值在压缩应变高达〜0.03时呈现负值，并且随应变和温度的增加而增大。发现R值的这些演变趋势与{1012}孪晶的活性密切相关。该方法扩展到锌的压缩孪晶，其理论计算对横向应变比显示出相同的影响。

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来源
《Materials Science and Engineering》 |2011年第15期|p.4941-4946|共6页
作者
Y.B.Chun; C.H.J.Davies;
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作者单位

ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University, Victoria 3800, Australia;

ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University, Victoria 3800, Australia;

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正文语种 eng
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关键词
lateral strain ratio; twinning; magnesium alloys; hexagonal close-packed crystal structure;

机译：横向应变比孪生镁合金六方密堆积晶体结构;

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专利

1. Role of {1012} twinning in the anisotropy and asymmetry of AZ31 magnesium alloy under high strain rate deformation [J] . Xiaoxia Wang, Pingli Mao, Ruifeng Wang, Materials Science and Engineering . 2020,第Jana20期

机译：{1012}孪晶在高应变率变形下对AZ31镁合金的各向异性和不对称性的作用
2. An experimental and numerical study of texture change and twinning-induced hardening during tensile deformation of an AZ31 magnesium alloy rolled plate [J] . Adrien Chapuis, Pei Liu, Qing Liu Materials Science and Engineering . 2013,第JANa20期

机译：AZ31镁合金轧制板拉伸变形过程中织构变化和孪生硬化的实验与数值研究
3. Twinning-induced negative strain rate sensitivity in wrought Mg alloy AZ31 [J] . Y.B. Chun, C.HJ. Davies Materials Science and Engineering . 2011,第18期

机译：孪生诱发变形Mg合金AZ31的负应变速率敏感性
4. Twinning-Induced Negative Strain Rate Sensitivity in WroughtMagnesium Alloy AZ31 [C] . Y.B. Chun, C.H.J. Davies Pacific Rim International Conference on Advanced Materials and Processing . 2010

机译：铁锈镁合金AZ31中的孪生负菌株敏感性
5. The Role of Deformation Twinning on Strain Hardening and Recrystallization in Magnesium Alloy AZ31. [D] . Levinson, Amanda J. 2012

机译：变形孪晶对镁合金AZ31的应变硬化和再结晶的作用。
6. Statistical Analysis of Grain-Scale Effects of Twinning Deformation for Magnesium Alloys under Cyclic Strain Loading [O] . Damin Lu, Shuai Wang, Yongting Lan, 2020

机译：循环应变作用下镁合金孪晶变形晶粒尺度效应的统计分析
7. Relationship between Deformation-Induced Surface Relief and Double Twinning in AZ31 Magnesium Alloy [O] . Daisuke Ando, Junichi Koike 2007

机译：AZ31镁合金变形诱导表面浮雕与双孪桃的关系

Negative lateral strain ratio induced by deformation twinning in magnesium alloy AZ31

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