Effect of Ce/La microalloying on microstructural evolution of Mg-Zn-Ca alloy during solution treatment

被引：35
作者：
Zhang Qingxin [1 ,2 ]
Tong Libo [1 ]
Cheng Liren [1 ]
Jiang Zhonghao [2 ]
Meng Jian [1 ]
Zhang Hongjie [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R China
[2] Jilin Univ, Coll Mat Sci & Engn, Key Lab Automobile Mat, Changchun 130025, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2015年 / 33卷 / 01期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Mg-Zn-Ca alloy; Ce/La; solution treatment; MgxZny-Ca-(Ce/La) phase; rare earths; MECHANICAL-PROPERTIES; CE ALLOY; PHASE; STRENGTH; TEXTURE;
D O I：
10.1016/S1002-0721(14)60385-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The effect of Ce/La misch metal addition on the microstructural evolution of as-cast and as-soluted Mg-5.3Zn-0.5Ca (wt.%) alloys was systematically investigated. It was found that Ce/La could effectively refine the as-cast alloy and restrain grain growth during solution treatment, which was derived from the constitutional supercooling during solidification process and the formation of stable intermetallic compounds CeMg12 and Mg17La2. Furthermore, Ce/La microalloying and solution treatment resulted in an evolution from the original lamellar Ca2Mg6Zn3/alpha-Mg to the divorced eutectic structure. The thermal stability of Mg-Zn-Ca alloy could be effectively improved by Ce/La addition, because the low-melting-point binary Mg-Zn phase was transformed to MgxZny-Ca-(Ce/La) phase with higher thermal stability and the amount of Ca2Mg6Zn3/a-Mg eutectic structure was reduced.
引用
收藏
页码：70 / 76
页数：7
相关论文
共 19 条
[1]   Trends in the development of new Mg alloys [J].
Bamberger, M. ;
Dehm, G. .
ANNUAL REVIEW OF MATERIALS RESEARCH, 2008, 38 :505-533
[2]   Precipitation hardening in Mg-Ca-Zn alloys [J].
Bamberger, M ;
Levi, G ;
Sande, JBV .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (02) :481-487
[3]   Microstructure and mechanical properties of Mg-Zn-Ca-Ce alloy processed by semi-continuous casting [J].
Du, Y. Z. ;
Zheng, M. Y. ;
Qiao, X. G. ;
Wu, K. ;
Liu, X. D. ;
Wang, G. J. ;
Lv, X. Y. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 582 :134-139
[4]   Microstructures and mechanical properties of as-cast and as-extruded Mg-4.50Zn-1.13Ca (wt%) alloys [J].
Du, Y. Z. ;
Zheng, M. Y. ;
Xu, C. ;
Qiao, X. G. ;
Wu, K. ;
Liu, X. D. ;
Wang, G. J. ;
Lv, X. Y. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 576 :6-13
[5]   Second phase formation in melt-spun Mg-Ca-Zn alloys [J].
Jardim, PM ;
Solórzano, G ;
Vander Sande, JB .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 381 (1-2) :196-205
[6]   Microstructures and mechanical properties of Mg-Zn-RE-Ca casting alloys [J].
Jun, Joong-Hwan ;
Park, Bong-Koo ;
Kim, Jeong-Min ;
Kim, Ki-Tae ;
Jung, Woon-Jae .
ECO-MATERIALS PROCESSING & DESIGN VII, 2006, 510-511 :214-217
[7]   INVESTIGATION OF STRUCTURES IN AS-CAST ALLOYS FROM THE Mg-Zn-Ca SYSTEM [J].
Kubok, K. ;
Litynska-Dobrzynska, L. ;
Wojewoda-Budka, J. ;
Goral, A. ;
Debski, A. .
ARCHIVES OF METALLURGY AND MATERIALS, 2013, 58 (02) :329-333
[8]   Solidification, solution treatment and age hardening of a Mg-1.6 wt.% Ca-3.2 wt.% Zn alloy [J].
Levi, G ;
Avraham, S ;
Zilberov, A ;
Bamberger, M .
ACTA MATERIALIA, 2006, 54 (02) :523-530
[9]   The development of binary Mg-Ca alloys for use as biodegradable materials within bone [J].
Li, Zijian ;
Gu, Xunan ;
Lou, Siquan ;
Zheng, Yufeng .
BIOMATERIALS, 2008, 29 (10) :1329-1344
[10]   Microstructure and strength of rapidly solidified and extruded Mg-Zn alloys [J].
Maeng, DY ;
Kim, TS ;
Lee, JH ;
Hong, SJ ;
Seo, SK ;
Chun, BS .
SCRIPTA MATERIALIA, 2000, 43 (05) :385-389
12