对应变诱发法制备的AZ91D镁合金半固态浆料在575 ℃保温15～60 min后进行挤压成形试验, 通过分析不同保温时间下半固态浆料的挤压流变性能及组织特征, 研究了保温时间对镁合金半固态挤压成形的影响。结果表明: 随着保温时间的延长, 半固态浆料的临界挤压力、最大挤压力和固相率都呈先降后升的趋势, 在保温45 min时挤压力达到最小值, 半固态浆料的充型距离最大, 固相颗粒的球形率最佳且分布最均匀, 固相率和成形件表面粗糙度最小。
所属栏目
材料性能及其应用河北省高等学校科学技术研究项目(Q2012011); 河北省自然科学基金资助项目(E2013209268)
收稿日期
2013/3/242014/2/24
作者单位
郑小平:河北联合大学冶金与能源学院, 唐山 063009
陈继亮:三一汽车起重机械有限公司, 长沙 410600
吉泽升:哈尔滨理工大学材料科学与工程学院, 哈尔滨 150040
宁江利:河北联合大学冶金与能源学院, 唐山 063009
备注
郑小平(1978-), 男, 广东南雄人, 讲师, 博士。
引用该论文:
郑小平,陈继亮,吉泽升,宁江利.Effect of Holding Time on Semi-solid Extrusion Shaping of AZ91D Magnesium Alloy[J].Materials for mechancial engineering,2014,38(5):62～65
郑小平,陈继亮,吉泽升,宁江利.保温时间对AZ91D镁合金半固态挤压成形的影响[J].机械工程材料,2014,38(5):62～65
参考文献
【1】
CAO X, JAHAZI M, IMMARIGEON J P, et al. A review of laser welding techniques for magnesium alloys［J］.Journal of Materials Processing Technology,2006,171(2):188-204.
【2】
KHOSRO A M, NIROUMAND B. Effects of ultrasonic treatment on microstructure and tensile strength of AZ91D magnesium alloy［J］.Journal of Alloys and Compounds,2011,509(1):114-122.
【3】
ALAM M E, HAN S, NGUYEN Q B, et al. Development of new magnesium based alloys and their nanocomposites［J］.Journal of Alloys and Compounds,2011,509(34):8522-8529.
【4】
ZENG Rong-chang, ZHANG Jin, HUANG Wei-jiu, et al. Review of studies on corrosion of magnesium alloys［J］.Tran-saction of Nonferrous Metals Society of China,2006,16(2):763-771.
【5】
LUO Shou-jing, KEUNG W C, KANG Yong-lin. Theory and application research development of semi-solid forming in China［J］.Transaction of Nonferrous Metals Society of China,2010,20(9):1805-1814.
【6】
NAFISI S, EMADI D, GHOMASHCHI R. Semi solid metal processing: the fraction solid dilemma［J］.Materials Science and Engineering: A,2009,507(1/2):87-92.
【7】
JIANG Ju-fu, WANG Ying, LUO Shou-jing. Application of equal channel angular extrusion to semi-solid processing of magnesium alloy ［J］.Materials Characterization,2007,58(2):190-196.
【8】
YANG Ming-bo, PAN Fu-sheng, CHENG Ren-ju, et al. Effect of semi-solid isothermal heat treatment on the microstructure of Mg-6A1-1Zn-0.7Si alloy［J］.Journal of Materials Processing Technology,2008,206(1/3):374-381.
【9】
ZHANG Liang, CAO Zhan-yi, LIU Yong-bing. Microstructure evolution of semi-solid Mg-14Al-0.5Mn alloys during isothermal heat treatment ［J］.Transaction of Nonferrous Metals Society of China,2010,20(7):1244-1248.
【10】
CHEN G P, ZHOU T R, YAN H, et al. Effect of predeformation manner on semi-solid structure of AZ61 magnesium alloy in SIMA process ［J］.Acta Metallurgica Sinica (English Letters),2008,21(3):197-204.
【11】
PARSHIZFARD E, SHABESTARI S G. An investigation on the microstructural evolution and mechanical properties of A380 aluminum alloy during SIMA process［J］.Journal of Alloys and Compounds,2011,509(40):9654-9658.
【12】
YU Si-rong, LI Dong-cheng, KIM N. Microstructure evolution of SIMA processed Al2024［J］.Materials Science and Engineering: A,2006,420(1/2):165-170.
【13】
谢水生, 黄声宏.半固态金属加工技术及其应用［M］.北京: 冶金工业出版社, 1999.
【14】
FAN Z. Semisolid metal processing ［J］.International Materials Reviews, 2002, 47(2):49-82.
【15】
刘正, 张奎, 曾小勤.镁基轻质合金理论基础及其应用［M］.北京: 机械工业出版社, 2002.
