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Trans. Nonferrous Met. Soc. China 23(2013) 1602-1609 Effects of melt temperature on as-cast structure and mechanical properties of AZ31B magnesium alloy Shu-ying CHEN, Guo-wei CHANG, Yu-duo HUANG... temperature on the as-cast structure and mechanical properties of AZ31B magnesium alloy were studied through a home-made electrical resistance furnace. The results show that the equiaxed dendrite size of AZ31B......
文章编号:1004-0609(2010)09-1665-06 AZ31B镁合金表面激光熔覆Cu-Ni合金层 崔泽琴1, 2, 吴宏亮1, 王文先1, 2, 许并社1, 2 (1. 太原理工大学 材料科学与工程学院,太原 030024； 2. 太原理工大学 新材料界面科学与工程教育部重点实验室,太原 030024) 摘 要:针对镁合金表面耐磨性和耐蚀性差的问题,利用横流CO2激光器在AZ31B镁合金表面激光熔覆Cu-Ni合金层,并利用光学显微镜(OM),扫描电镜(SEM)和能谱分析仪(EDS)分析熔覆层与基体的结合界面特征以及显微组织和成分分布情况,测试合金层的显微硬度和耐蚀性.结果表明:合金层与基体结合良好,缺陷较少,但局部存在不均匀的Cu-Ni富集区,且在其边缘区域的枝晶间均匀分布着1~1.5 ?m的十字状Laves相；合金层的硬度分布比较均匀,约为......
文章编号:1004-0609(2011)09-2023-05 AZ31B镁合金板材快速气压胀形行为 王 刚, 王建珑, 张拓达, 张治朋 (哈尔滨工业大学(威海) 材料科学与工程学院,威海 264209) 摘 要:对板厚1.0 mm的细晶AZ31B镁合金板材进行快速气压胀形研究,在300~400 ℃的温度范围内进行了各种气压下300 s的快速气压胀形试验,研究温度和气压对AZ31B板材快速气压胀形能力的影响.结果表明:在不同温度下,胀形高度均随着气压的升高而增大,但气压升高到一定程度时,胀形时间不到300 s即产生破裂；胀形高度在胀形温度400 ℃时出现峰值为45 mm.在400 ℃和0.6 MPa条件下,胀形5 min时相对胀形高度达到1.13.胀形件壁厚分布不均匀,温度越高,壁厚分布不均匀度越高.最后,研究了不同温度下快速气压胀形时胀形件微观组织的演变规律. 关......
Trans. Nonferrous Met. Soc. China 23(2013) 1589-1594 Low cycle fatigue behavior of extruded AZ31B magnesium alloy Chang-jian GENG1, Bao-lin WU2, Xing-hao DU2, Yan-dong WANG1, Yu-dong ZHANG2, E... of an extruded AZ31B magnesium alloy was investigated under symmetric loading at different total strain amplitudes. It is found that except for the low strain magnitude of 0.5%, the alloy exhibits......
Trans. Nonferrous Met. Soc. China 23(2013) 916-922 Influence of strain rate on microstructure and formability of AZ31B magnesium alloy sheets Li-fei WANG1,2, Guang-sheng Huang1,2,3, Hong-cheng LI3...: The effects of strain rate on microstructure and formability of AZ31B magnesium alloy sheets were investigated through uniaxial tensile tests and hemispherical punch tests with strain rates of 10-4......
Trans. Nonferrous Met. Soc. China 23(2013) 1942-1948 Temperature evolution and fatigue life evaluation of AZ31B magnesium alloy based on infrared thermography Zhi-feng YAN, Hong-xia ZHANG, Wen-xian... temperature of extruded AZ31B alloy plate was measured by infrared thermograph in air during tension and high-cycle fatigue tests. The mechanism of heat production was discussed and the value of critical......
退火工艺对AZ31B镁合金铸轧板组织和性能的影响李建平,李志鹏,毛大恒,张彪(中南大学 机电工程学院,高性能复杂制造国家重点实验室,湖南 长沙,410083)摘 要:研究不同退火温度,时间对普通铸轧和复合能场(电磁场+超声波)铸轧AZ31B镁板组织及性能的影响.研究结果表明:铸轧镁板的再结晶温度在复合能场作用下降低了约50 ℃；250 ℃退火时,普通铸轧镁板无明显再结晶,复合能场铸轧镁板局部再结...晶界附近.退火后铸轧镁板的塑性变形能力明显改善,在300 ℃,4 h时,复合能场铸轧镁板的硬度,抗拉强度,屈服强度,伸长率比普通铸轧镁板分别提高了4.7%,17.2%,34.1%和74.6%.关键词:复合能场；AZ31B镁合金；退火；铸轧；性能Effect of annealing process on microstructure and properties of AZ31B......
AZ31B 镁合金在高应变速率下的热压缩变形行为和微观组织演变申利权1,2,杨 旗3,靳 丽1,2,董 杰1,2(1. 上海交通大学 材料科学与工程学院,上海 200240；2. 上海交通大学 轻合金精密成型国家工程研究中心和金属基复合材料国家重点实验室,上海 200240；3. 上海宝钢研究院,上海 200940)摘 要:采用Thermecmastor-Z 热模拟试验机在变形温度为200~520 ℃,应变速率为2~60 s-1 条件下对AZ31B 镁合金厚板进行热压缩变形试验,压缩变形量为60%.结合变形后的微观组织以及热压缩真应力-真应变曲线,分析应变速率和变形温度等工艺参数对其微观组织演变的影响.结果表明:当变形温度高于320 ℃时,AZ31B 镁合金的真应力-真应变曲线呈现典型的动态再结晶特性.当应变速率一定时,流变应力随温度升高而降低；当变形温度一定时,流变应力在高温低应变速率......
Trans. Nonferrous Met. Soc. China 25(2015) 2686-2692 Electroplastic effect in AZ31B magnesium alloy sheet through uniaxial tensile tests Huan-yang XIE1, Qian WANG1, Fang PENG1, Kai LIU1, Xiang-huai..., China Received 24 September 2014; accepted 30 January 2015 Abstract: The electroplastic effect in AZ31B magnesium alloy sheet was investigated through uniaxial tensile tests. In order to show......
Trans. Nonferrous Met. Soc. China 29(2019) 735-740 Effect of pulsed current on AZ31B magnesium sheets during annealing Kai LIU1,2, Xiang-huai DONG1, Wen SHI1 1. National Engineering Research Center... Abstract: The annealing tests heated by pulsed current (PC) or furnace for AZ31B magnesium sheets were carried out, and the effects of PC on the microstructure and dislocation density of the alloy were......
