付三玲,李全安,井晓天,张清

• 1:西安理工大学材料科学与工程学院
• 2:河南科技大学物理工程学院
• 3:河南科技大学材料科学与工程学院

摘要(Abstract)：

通过光学显微镜(OM)、透射电镜(TEM)、X射线衍射(XRD)及室温到300℃的拉伸试验,研究了Mg-(6,9,12,15)Gd-1Sm-0.5Zr镁合金显微组织和力学性能的影响。结果表明:时效态Mg-Gd-Sm-Zr系镁合金由α-Mg基体和Mg5Gd相组成。适量Gd元素的添加能够细化合金组织、提高合金室温和高温的力学性能。在Gd含量达到和超过9 mass%后,合金出现抗拉强度反常温度效应,本文初步探讨了出现这种现象的微观机理。合金伸长率在200℃以下时,随Gd添加量的增加而减小;超过200℃后,伸长率随Gd添加量的增大而增大。

关键词(KeyWords)： Mg-Gd-Sm-Zr合金;显微组织;力学性能;抗拉强度反常温度效应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171059,51571084);; 河南省科技攻关计划项目(152102210072);; 河南省高校科技创新团队支持计划(2012IRTSTHN008);; 河南省基础与前沿技术研究计划(102300410018)

作者(Author): 付三玲,李全安,井晓天,张清

DOI: 10.13289/j.issn.1009-6264.2016.08.008

参考文献(References)：

• [1]PAN Hu-cheng,REN Yu-ping,FU He,et al.Recent developments in rare-earth free wrought magnesium alloys having high strength:A review[J].Journal of Alloys and Compounds,2016,663:321-331.
• [2]陈振华.耐热镁合金[M].北京:化学工业出版社,2007.
• [3]徐河,刘静安,谢水生.镁合金制备与加工技术[M].北京:冶金工业出版社,2007.
• [4]王殊,师春生,赵乃勤,等.自行车车架材料以及镁合金的应用[J].材料导报,2006,20(8):87-89.WANG Shu,SHI Chun-sheng,ZHAO Nai-qin,et al.Bicycle frame materials and the application of magnesium alloys[J].Materials Review,2006,20(8):87-89.
• [5]HUANG Zheng-hua,QI Wen-jun,XU Jing,et al.Microstructures and mechanical properties of Mg-Al-Sm series heat-resistant magnesium alloys[J].Transactions of Nonferrous Metals Society of China,2015,25(1):22-29.
• [6]ZHANG Da-tong,Suzuki Mayumi,Maruyama Kouichi.Microstructural evolution of a heat-resistant magnesium alloy due to friction stir welding[J].Scripta Materialia,2005,52(9):899-903.
• [7]王渠东,吕宜振,曾小勤,等.镁合金在电子器材壳体中的应用[J].材料导报,2000,14(6):22-24.WANG Qu-dong,LYi-zhen,ZENG Xiao-qin,et al.Current application of magnesium alloy in manufacturing electronic equipment[J].Materials Review,2000,14(6):22-24.
• [8]赵怿,董刚,赵博.镁合金在航空领域应用的研究进展[J].有色金属工程,2015,5(2):23-27.ZHAO Yi,DONG Gang,ZHAO Bo.Research progress of magnesium alloy application in aviation manufacturing[J].Nonferrous Metals Engineering,2015,5(2):23-27.
• [9]In-Ho Jung,Mehdi Sanjari,Junghwan Kim,et al.Role of RE in the deformation and recrystallization of Mg alloy and a new alloy design concept for Mg-RE alloys[J].Scripta Materialia,2015,102:1-6.
• [10]LIU Ning-yuan,ZHANG Zhen-yan,PENG Li-ming,et al.Microstructure evolution and mechanical properties of Mg-Gd-Sm-Zr alloys[J].Materials Science and Engineering A,2015,627:223-229.
• [11]LI Ji-lin,CHEN Rong-shi,MA Yue-qun,et al.Effect of Zr modification on solidification behavior and mechanical properties of Mg-Y-RE(WE54)alloy[J].Journal of Magnesium and Alloys,2013,1(4):346-351.
• [12]张春香,陈培磊,陈海军,等.镁合金在汽车工业中的应用及其研究进展[J].铸造技术,2008,29(4):531-535.ZHANG Chun-xiang,CHEN Pei-lei,CHEN Hai-jun,et al.Application and research progress of magnesium alloys in automobile industry[J].Foundry Technology,2008,29(4):531-535.
• [13]孙明,吴国华,王玮,等.Mg-Gd系镁合金的研究进展[J].材料导报,2009,23(6):98-103.SUN Ming,WU Guo-hua,WANG Wei,et al.Research progress of Mg-Gd alloy[J].Materials Review,2009,23(6):98-103.
• [14]Ott N,Schmutz P,Ludwig C,et al.Local,element-specific and time-resolved dissolution processes on a Mg-Y-RE alloy-Influence of inorganic species and buffering systems[J].Corrosion Science,2013,75:201-211
• [15]PENG Qiu-ming,HUANG Yuan-ding,Kainer Karl Ulrich,et al.High ductile as-cast Mg-RE based alloys at room temperature[J].Materials Letters,2012,83:209-212
• [16]张清,李全安,张兴渊,等.Mg-Gd系耐热镁合金的研究进展[J].铸造,2011,60(11):1080-1083.ZHANG Qing,LI Quan-an,ZHANG Xing-yuan,et al.Research progress of heat resistant Mg-Gd system magnesium alloy[J].Foundry,2011,60(11):1080-1083.
• [17]吴玉娟,丁文江,彭立明,等.高性能稀土镁合金的研究进展[J].中国材料进展,2011,30(2):1-9.WU Yu-juan,DING Wen-jiang,PENG Li-ming,et al.Research progress of advanced magnesium rare-earth alloys[J].Materials China,2011,30(2):1-9.
• [18]Rokhlin L L,Dobatkina T V,Nikitina N I.Constitution and properties of the ternary magnesium alloys containing two rare-earth metals of different subgroups[J].Materials Science Forum,2003,419/422:291-296.
• [19]陈振华.耐热镁合金[M].北京:化学工业出版社,2007:.

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