التفاصيل البيبلوغرافية
| العنوان: |
Ca对Mg-Gd-Y-Zn-Zr合金热变形行为及热加工 性能的影响. (Chinese) |
| Alternate Title: |
Effect of Ca-addition on Hot Deformation Behavior and Workability of Mg-Gd-Y-Zn-Zr Alloy. (English) |
| المؤلفون: |
王玉娇, 江海涛, 柳超敏, 张韵、郭文启, 康强, 徐哲, 王盼盼 |
| المصدر: |
Rare Metal Materials & Engineering; May2020, Vol. 49 Issue 5, p1650-1656, 7p |
| Abstract (English): |
Effect of Ca on hot deformation behavior and workability of Mg-Gd-Y-Zn-Zr alloy were investigated by Gleeble 3500 thermal simulation tester conducted at a temperature ranging from 573 K to 723 K and strain rate varying from 0.001 s'1 to 1 s1. It is indicated that the addition of Ca increased the flow stress and hot deformation active energy, widened the range of processing stable zone and the optimal processing zone, but decreased the maximum power dissipation efficiency, and inhibited the dynamic re crystallization. Combined with the micro structure after thermal compression which was analyzed by laser confocal microscopy, the accuracy of the processing map was verified. The optimized hot processing parameters of Mg-Gd-Y-Zn-Zr were formulated, namely strain rate ranging from 0.001 s'1 to 0.01 s'\ temperature ranging from 623 K to 723 K. Depending on the optimum processing parameters? an isothermal forged magnesium alloy with good quality and no deformation defects was fabricated. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
利用Gleeble3500热模拟试验机研究了 Ca对Mg-Gd-Y-Zn-Zr合金在变形温度573-723 K,应变速率0.001~1 s4 的热变形行为及热加工性能的影响。结果表明：Ca增大了合金的流变应力及变形激活能，扩宽了加工安全区及最佳加 工区范围，但降低了最大功率耗散因子及动态再结晶程度。结合激光共聚焦显微镜分析了合金热压缩后组织，验证了 热加工图的准确性，并制定了合理的热加工工艺，Mg-Gd-Y-Zn-Zr合金的最佳加工区域为：应变速率0.001~0.01 s4,温 度623~723 K。根据最佳加工工艺参数获得了表面质量良好，无变形缺陷的等温锻造合金。. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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