Mechanical Characterization of The Plastic Deformation Behavior of AZ31 Magnesium Alloy Processed Through Spinning Using Nanoindentation
Mechanical Characterization of The Plastic Deformation Behavior of AZ31 Magnesium Alloy Processed Through Spinning Using Nanoindentation
复制标题
纳米压痕旋压加工AZ31镁合金塑性变形行为的力学表征
DOI：
10.1007/s12666-021-02218-5
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发表时间：
2021-03
影响因子：
1.6
通讯作者：
Ning Shi
中科院分区：
文献类型：
--
作者：
Jie Zhang;Wenxian Wang;Tingting Zhang;Zhifeng Yan;Ning Shi
采用Berkvoich纳米压痕仪对AZ31镁合金的纳米力学性能进行了系统的表征。通过定量研究镁合金旋压过程中的组织演变，揭示了镁合金的塑性变形行为。压痕深度，弹性恢复率，屈服强度，和硬化指数进行了评价在最大载荷。结果表明，在光学显微镜下观察到的晶粒逐渐细化。纳米压痕实验结果表明，随着旋压道次的增加，复合材料的纳米力学性能提高。随着旋压道次的增加，屈服强度和硬化指数分别在42.0 ± 0.5-125.5 ± 0.6MPa和0.182-0.017之间。综上所述，可以利用纳米压痕试验的结果来评价AZ31镁合金在旋压后的弹塑性行为。
The nanomechanical properties of an AZ31 magnesium alloy processed through spinning was systematically characterized with nanoindentation experiments using a Berkvoich indenter. The plastic deformation behavior of magnesium alloy was revealed by quantitatively studying microstructure evolution through spinning. Indentation depth, elastic recovery rate, yield strength, and hardening exponent were evaluated at the maximum loads. It was found that the grains observed by optical microscope were gradually refined. The nanoindentation plots revealed that the nanomechanical properties improved with the increase of spinning passes. Additionally, the calculated yield strength and hardening exponent of the cylinders were in the range of 42.0±0.5–125.5±0.6 MPa and 0.182–0.017 respectively with the increase of spinning passes. In summary, it was possible to evaluate the elastoplastic behavior of AZ31 magnesium alloy after spinning using the results of the nanoindentation tests.