Deformation Behavior of AM30 Magnesium Alloy
Deformation Behavior of AM30 Magnesium Alloy
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DOI：
10.1007/s11665-018-3567-4
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发表时间：
2018-09-01
影响因子：
2.3
通讯作者：
Dixit, U. S.
中科院分区：
文献类型：
--
作者：
Bisht, A.;Yadav, V.;Dixit, U. S.
研究了AM30镁合金在热加工条件下的变形行为，并建立了经验关系式。在0.001- 10 s（-1）应变速率范围和423- 623 K温度范围内进行压缩试验以获得力学性能。压缩曲线采用两种方法拟合，即分段线性拟合和Johnson-Cook型关系。分段线性拟合被认为是适当的描述在动态再结晶（DRX）制度的力学行为相比，建议约翰逊-库克型关系。Johnson-Cook型模型不能捕捉DRX的本质特征，特别是在高应变率下。
In this study, deformation behavior of AM30 magnesium alloy is investigated in the hot working regime and empirical relations are developed. Compression tests were performed in the 0.001-10s(-1) strain rate range and 423-623K temperature range to obtain the mechanical properties. The compression curves were fitted using two approaches, viz. piecewise linear fitting and a Johnson-Cook type relation. Piecewise linear fit is found to be appropriate for describing the mechanical behavior in the dynamic recrystallization (DRX) regime as compared to the proposed Johnson-Cook type relation. The Johnson-Cook type model is not able to capture the essential feature of DRX, particularly at high strain rates.