材料研究学报  2012, Vol. 26 Issue (2): 169-174

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等温热处理对AZ61稀土镁合金半固态组织的影响

杜磊, 闫洪

南昌大学材料加工工程系 南昌 330031

Effect of Isothermal Heat-treated on the Microstructure of ZA61 Rare Earth Magnesium Alloy

DU Lei, YAN Hong

Department of Materials Processing Engineering, Nanchang University, Nanchang, 330031

杜磊 闫洪. 等温热处理对AZ61稀土镁合金半固态组织的影响[J]. 材料研究学报, 2012, 26(2): 169-174.
, . Effect of Isothermal Heat-treated on the Microstructure of ZA61 Rare Earth Magnesium Alloy[J]. Chin J Mater Res, 2012, 26(2): 169-174.

摘要 参考文献 相关文章 Metrics 全文: PDF(954 KB)   摘要: 研究了等温热处理对AZ61稀土镁合金半固态组织的影响, 结果表明: 随着等温热处理温度的升高, 铸态合金中的初始枝晶组织演变成了半固态非枝晶组织, 经过了粗化、组织分离和球化三个过程。在等温热处理过程中, 稀土La的加入阻碍了原子向固相粒子的聚集和固相粒子的合并, 抑制了固相粒子的进一步长大, 使半固态非枝晶组织更加细小。经过不同保温时间后, 不规则的大块状组织开始球化, 形成大量的近球形颗粒。但是, 随着保温时间的进一步延长, 球化的颗粒开始粗化长大且在颗粒内形成了大量的液岛。枝晶组织的球化过程, 包括二次枝晶壁消失和Ostwald熟化。 关键词 ： 金属材料,  AZ61稀土镁合金,  等温热处理,  半固态,  显微组织     Abstract：The effect of the isothermal heat-treatment on semi-solid microstructure of AZ61 rare earth alloy were investigated. The results show that with increasing of the isothermal heat-treated temperature, the serious dendritic in the microstructure of initial cast alloy turned into semi-solid non-dendritic tissue after the isothermal heat-treatment. This microstructure evolution includes coarsening, microstructure separation and spheroidizing. In the process of isothermal heat-treatment , the element La is very important to refine alloy’s organization.It hinder aggregating and associating of the particles of solid phase , inhibit further growing of the particles of solid phase and make the microstructure of non-dendritic tissue more smaller. After the isothermal heat-treatment for different time, the irregular large block tissue begin spheroidizing and form many nearly spherical particles. But when the time of isothermal heat-treatment exceed a certain range, the spherical particles began to coarsen and many liquid islands formed in the particles. The spheroidizing of dendritic microstructure includes the disappearance of secondary dendrite wall and Ostwald ripening process. Key words： metallic materials    AZ61 rare earth magnesium alloy    isothermal heat-treatment    semisolid    microstructure 收稿日期: 2011-12-19      ZTFLH:  TG113   基金资助: 国家自然科学基金51165032和江西省教育厅资助GJJ11269项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 杜磊 闫洪 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2012/V26/I2/169 1 JIANG Jufu, WANG Ying, LUO Shoujing, Application of equal channel angular extrusion to semi-solid processing of magnesium alloy, Materials Characterization, 58(2), 190(2007) 2 LI Quanan, LI Kejie, JING Xiaotian, CHEN Jun, ZHANG Xingyuan, Effects of Sm on microstructure and mechanical properties of AZ61 alloys, Transactions of Materials and Heat Treatment, 31(1), 100 (2010) (李全安, 李克杰, 井晓天, 陈 君, 张兴渊, 稀土钐对AZ61合金组织和性能的影响, 材料热处理学报,  31(1), 100(2010)) 3 ZHOU Bingfeng, YAN Hong, Thixo-extrusion forming of semi-solid AZ61 magnesium alloy, Hot Working Technology, 38(19), 73(2009) (周冰峰, 闫  洪, AZ61镁合金半固态触变挤压成形工艺研究, 热加工工艺,  38(19), 73(2009)) 4 YANG Mingbo, PAN Fusheng, ChENG Renju, BAI Liang, Effect of semi-solid isothermal heat treatment on the microstructure of Mg-6Al-1Zn-0.7Si alloy, Journal of Materials Processing Technology, 206(1), 374(2008) 5 WANG Na, BAI Pucun, HOU Xiaohu, HAO Yongfei, Effect of Nd addition on microstructure and corrosion resistance of AZ91 magnesium alloy, Chinese Journal of Materials Research, 25(2), 214(2011) (王 娜, 白朴存, 侯小虎, 郝永飞, Nd对AZ91镁合金显微组织和耐腐蚀性能的影响, 材料研究学报,  25(2), 214(2011) 6 ZHANG Qing, LI Quanan, JING Xiaotian, ZHANG Xingyuan, Application of rare earth Sm to heat resistant magnesium alloy, Foundry, 59(3), 260(2010) (张 清, 李全安, 井晓天, 张兴渊, 稀土Sm在耐热镁合金中的应用, 铸造,  59(3), 260(2010)) 7 WANG J G, LIN H Q, Li Y Q, JIANG Q C, Effect of initial as-cast microstructure on semisolid microstructure of AZ91D alloy during the srrain-induced melt activation process, Journal of Alloys and Compounds, 457(1), 251(2008) 8 ZHANG Xiaoli, LI Tingju, TENG Haitao, XIE Shuisheng, JIN Junze, Microstructure evolution of as-cast AZ91 magnesium alloy during isothermal heat treatment, Foundry, 56(10), 1048(2007) (张小立, 李廷举, 藤海涛, 谢水生, 金俊泽, 等温热处理过程中铸态AZ91镁合金的微观组织演化, 铸造,  56(10), 1048(2007)) 9 ZHANG L, LIU Y B, CAO Z A, ZHANG Y F, ZHANG Q Q, Effects of isothermal process parameters on the microstructure of semisolid AZ91D alloy produced by SIMA, Journal of Alloys and Compounds, 446(2), 98(2008) 10 ZHANG Jizhai, MA Ying, CHEN Tijun, WEN Jing, Effects of semi-solid isothermal treatment on microstructure of am60b magnesium alloy, Special Casting & Nonferrous Alloys, 29(4), 337(2009) (张记宅, 马 颖, 陈体军, 文靖, 半固态等温热处理对AM60B镁合金组织的影响, 特种铸造及有色合金,  29(4), 337(2009)) 11 YANG Mingbo, SHEN Jia, BAI Liang, Pan Fusheng, Microstructural evolution of ZA84 magnesium alloy during semi-solid isothermal heat treatment, Special Casting & Nonferrous Alloys, 28(9), 690(2008) (杨明波, 沈 佳, 白亮, 潘复生, ZA84镁合金在半固态等温热处理过程中的组织演变, 特种铸造及有色合金,  28(9), 690(2008)) 12 LI Kejie, LI Quanan, WANG Xiaoqiang, Effects of gadolinium on AZ81 magnesium alloy microstructure, Nonferrous Metals, 62(1), 10(2010) (李克杰, 李全安, 王小强, Gd对AZ81镁合金显微组织的影响, 有色金属,  62(1), 10(2010)) 13 DENG Yonghe, The research and development trends of rare earths magnesium alloy, Chinese Rare Earths, 30(1), 76(2009) (邓永和, 稀土镁合金研究性状与发展趋势, 稀土,  30(1), 76(2009)) 14 Hu Gengxiang, CAI Xun, Rong Yonghua, Fundamentals of Materials Science, the second edition (Shang Hai, Shanghai Jiaotong University Press, 2006) p.147 (胡赓祥, 蔡珣, 戎咏华,  材料科学基础, 第二版 (上海, 上海交通大学出版社, 2006) p.147) 15 LI Yuandong, CHEN Tijun, MA Yin, YAN Fengyun, HAO Yuan, Effect of rare earth 0.5% addition on semi-solid microstructural evolution of AZ91D alloy, The Chinese Journal of Nonferrous Metals, 17(2), 323(2007) (李元东, 陈体军, 马 颖, 阎峰云, 郝 远, 添加0.5%富铈混合稀土AZ91D镁合金半固态组织的形成, 中国有色金属学报,  17(2), 323(2007)) 16 ZHANG Xiaoli, Research and Development on Semisolid Slurry Processing Technology of Mg-and Al-based Alloy, Doctoral Dissertation, Dalian University of Technology, (2008) (张小立, 铝、镁合金半固态浆料制备技术的研究, 博士学位论文, 大连理工大学, (2008)) 17 ZHU Guanglei, XU Jun, ZHANG Zhifeng, LIU Guojun, FAN Z, Effect of high shear rate on solidificaition microstructure of semisolid AZ91D alloy, Transactions of Nonferrous Metals Society of China, 20(3), 870(2010) [1] 潘新元, 蒋津, 任云飞, 刘莉, 李景辉, 张明亚. 热挤压钛/钢复合管的微观组织和性能[J]. 材料研究学报, 2023, 37(9): 713-720. 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