Study on hot deformation behavior of Mg-9Y-1MM-1Zn-0.6Zr alloy
Study on hot deformation behavior of Mg-9Y-1MM-1Zn-0.6Zr alloy
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Mg-9Y-1MM-1Zn-0.6Zr合金热变形行为研究
DOI：
10.1088/1742-6596/2390/1/012026
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发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
Zhaoqian Sun
中科院分区：
文献类型：
--
作者：
Lishuai Feng;Minglong Ma;Kui Zhang;Yongjun Li;Xinggang Li;Guoliang Shi;Jiawei Yuan;Zhaoqian Sun
抽象的。稀土元素和LPSO相在Mg-9 Y-1 MM-1 Zn-0.6Zr（WE 91 B）合金综合性能的优化调控中发挥了重要作用，但合金的高强度也带来了加工变形困难等问题。为确定适合WE 91 B的最佳加工参数，采用Gleeble-3500热模拟测试仪对均匀化后的WE 91 B合金进行了恒温等速率压缩试验，研究了WE 91 B合金在温度693-783 K、应变速率0.001 ~ 1 s-1、最大变形量60%条件下的热变形行为。计算了WE 91 B合金的变形激活能，建立了WE 91 B合金的本构方程，并根据动态材料模型建立了WE 91 B合金的加工图。结果表明，该合金的流变应力曲线呈现出典型的动态再结晶特征，随着应变速率的提高和变形温度的降低，流变应力显着增加。WE 91 B合金的热变形激活能为331.605kJ/mol。从加工图和塑性变形后的显微组织两个方面来看，WE 91 B合金的最佳加工工艺为T = 783 K，ε = 0.05 s-1。
Abstract. Rare earth elements and the LPSO phase play a significant part in the optimal regulation of the comprehensive performance of the Mg-9Y-1MM-1Zn-0.6Zr (WE91B) alloy, but the high strength of the alloy also brings problems such as difficulties in processing deformation. To determine optimal machining parameters suitable for WE91B, the homogenized alloy was investigated in constant temperature and equal rate compression using the Gleeble-3500 thermal simulation measurement instrument, to study the hot deformation behavior of WE91B alloy in the temperature range of 693-783 K, strain rates of 0.001-1s−1 and maximum deformation of 60%. The deformation activation energy was calculated, the constitutive equation of WE91B alloy was constructed, and the processing map of the alloy was established according to the dynamic material model. The results show that the flow stress curves of the alloy exhibit typical dynamic recrystallization characteristics and the flow stress increases significantly with the increase in strain rate and decrease in deformation temperature. The hot deformation activation energy of WE91B alloy is about 331.605 kJ/mol. From the two aspects of processing map and microstructures after plastic deformation, the optimal processing process of WE91B alloy is T = 783 K and έ = 0.05 s−1.
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DOI：
--
发表时间：
2011
期刊：
The Chinese Journal of Nonferrous Metals
影响因子：
--
作者：
Dong Jie
通讯作者：
Dong Jie
DOI：
10.1016/j.msea.2004.08.049
发表时间：
2005-01-25
影响因子：
6.4
作者：
Prasad, YVRK;Rao, KP
通讯作者：
Rao, KP
DOI：
10.1016/s1003-6326(10)60539-0
发表时间：
2010-07
影响因子：
4.5
作者：
Zhongjian Wang;Qingxiang Yang;J. Qiao
通讯作者：
Zhongjian Wang;Qingxiang Yang;J. Qiao
DOI：
10.1007/bf02664902
发表时间：
1984-01-01
期刊：
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
影响因子：
--
作者：
PRASAD, YVRK;GEGEL, HL;BARKER, DR
通讯作者：
BARKER, DR
影响因子：
17.6
作者：
Xia, Xiangsheng;Zhang, Kui;Li, Ting
通讯作者：
Li, Ting