不同镦粗温度对AZ80镁合金空洞闭合演化规律的影响研究

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英文篇名：Effect of Different Upsetting Temperature on Evolution of Void Closure in AZ80 Magnesium Alloy 作者：任耀 ; 王强 ; 张治民 ; 郭鹏杰 ; 王鑫 ; 郭世超 英文作者：REN Yao;WANG Qiang;ZHANG Zhimin;GUO Pengjie;WANG Xin;GUO Shichao;College of Materials Science and Engineering, North University of China;Engineering Technology Research Center for Integrated Precision Forming of Shanxi; 关键词：AZ80镁合金 ; 镦粗 ; 空洞闭合 ; 数值模拟 ; 物理模拟 英文关键词：AZ80 magnesium alloy;;upsetting;;void closure;;numerical simulation;;physical simulation 中文刊名：SJGY 英文刊名：Hot Working Technology 机构：中北大学材料科学与工程学院;山西省精密成形工程技术研究中心; 出版日期：2019-03-19 09:25 出版单位：热加工工艺 年：2019 期：v.48;No.507 基金：国家自然科学基金资助项目(51775520) 语种：中文; 页：SJGY201905039 页数：4 CN：05 ISSN：61-1133/TG 分类号：161-164

摘要

研究了不同镦粗温度下AZ80镁合金空洞的演化规律。在一定的压下量(6 mm)和压下速度(0.1 mm/s)下,分别在340、350、360、370、380、390℃进行镦粗。利用数值模拟软件Deform对其成形过程进行了模拟,得出AZ80镁合金在不同温度镦粗时,空洞闭合的一般演化规律。然后在INSTRON万能拉伸机上进行镦粗验证试验,确定一般演化规律的真实性和准确性。结果表明,随着镦粗温度的变化,AZ80镁合金在360℃时,空洞近乎于完全闭合。
        The evolution of AZ80 magnesium alloy voids at different upsetting temperatures was studied. The upsetting was carried out at 340,350,360,370,380,390 ℃ under a certain reduction (6 mm) and reduction velocity (0.1 mm/s). The forming process was simulated by numerical simulation software Deform. The general evolution law of void closure of AZ80 magnesium alloy under different upsetting temperature was obtained. Then the upsetting verification test was carried out by using INSTRON universal tensile machine to determine the authenticity and accuracy of its general evolution law.The results show that with the change of upsetting temperature, the voids of AZ80 magnesium alloy are almost completely closed at 360 ℃.

引文

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