Mg-8Zn-1Cu-O.2Cr-O.5Ce-O.5Sb合金时效微观组织

稀有金属材料与工程, 2013, 42(12): 2472-2476.

Mg-8Zn-1Cu-O.2Cr-O.5Ce-O.5Sb合金时效微观组织

董允 ^1, , 林小娉 ^2, , 叶杰 ^3, , 何娜 ^4, , 王丽 ^5, , 崔保军 ^6,

1.东北大学,辽宁沈阳110819

2.东北大学,辽宁沈阳110819

3.东北大学,辽宁沈阳110819

4.东北大学,辽宁沈阳110819

5.东北大学,辽宁沈阳110819

6.东北大学,辽宁沈阳110819

基金项目: 国家自然科学基金项目(51141007) 河北省自然科学基金项目(E2010001398)

关键词：复合添加Cr-Ce-Sb , 时效强化 , 预沉淀相 , 短杆状沉淀相

Microstructure of Aging Mg-8Zn-1Cu Magnesium Alloy with Cr, Ce and Sb Compound Addition

Dong Yun ^1, , Lin Xiaoping ^2, , Ye Jie ^3, , He Na ^4, , Wang Li ^5, , Cui Baojun ^6,

1.东北大学,辽宁沈阳110819

2.东北大学,辽宁沈阳110819

3.东北大学,辽宁沈阳110819

4.东北大学,辽宁沈阳110819

5.东北大学,辽宁沈阳110819

6.东北大学,辽宁沈阳110819

Keywords： Cr,Ce and Sb compound addition , aging strengthening , pre-precipitate , short rod-shaped precipitate

利用HRTEM研究了复合添加Cr、Ce和Sb的Mg-8Zn-1Cu合金的时效微观组织.结果表明:在160℃经8h时效的实验合金时效初期存在较高的硬化速率,其微观组织中存在层错和位错等缺陷,Moiré条纹,与基体共格且无明显边界的短杆状预沉淀相和在三叉晶界交合处析出的沉淀相;经20 h时效处理后达到峰值硬度945 MPa,其微观组织中存在大量短杆状β1'-MgZn2相,块状β1'-MgZn2相和粒状沉淀相;经48h时效处理后,其微观组织中存在大量沿[0001]α方向生长的长条状沉淀相和弥散分布的粒状沉淀相,与Mg-8Zn-1Cu合金相比长条状沉淀相的尺寸明显减小.

参考文献

[1]	Chen Jingqu;Liu Jiangwen;Jiao Dongyan et al.[J].Heat Treatment of Metals(金属热处理),2010,35(06):6.
[2]	Clark J B .[J].ACTA METALLURGICA,1965,13:1281.
[3]	Li Aiwen;Liu Jiangwen;Wu Cuilan et al.[J].Materials Science and Technology(材料科学与工艺),2010,18(06):883.
[4]	Li Aiwen;Liu Jiangwen;Wu Cuilan et al.[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),2010,20(06):1053.
[5]	Clark J B;Zabfyr L;Moser Z.Binary Alloy Phase Diagrams[M].Ohio:American Society for Metals,1986:1563.
[6]	Zhang Xiuli;Xu Hongxia;Li Dehui .[J].Hot Working Technology(热加工工艺),2007,36(24):14.
[7]	Ding Wenjiang.Science and Technology of Magnesium Alloy[M].北京:科学出版社,2007:1.
[8]	Buha J .The effect of micro-alloying addition of Cr on age hardening of an Mg-Zn alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):293-299.
[9]	Buha, J .Mechanical properties of naturally aged Mg-Zn-Cu-Mn alloy[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):127-137.
[10]	Buha J .[J].Journal of Alloys and Compounds,2009,472:171.
[11]	Buha J .Reduced temperature (22-100 degrees C) ageing of an Mg-Zn alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):11-19.
[12]	Gao X;Nie J E .[J].Scripta Materialia,2007,56:645.
[13]	Buha J .[J].MATERIALS SCIENCE & ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2008,491:70.
[14]	Lorimer G W.Process of Magnesium Technology[M].London:Whitstable,1987:47.
[15]	Li Aiwen;Liu Jiangwen;Wu Cuilan et al.[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),2010,20(08):1487.
[16]	Unsworth W;KingJ F.Magnesium Technology[M].London:Institute of Metals,1987:25.
[17]	Li Aiwen;Zhu Hongmei;Jiao Dongling et al.[J].Materials Review(材料导报),2008,22(11):74.
[18]	Buha J;Ohkubo T .[J].MATERIALS SCIENCE & ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2008,39:2259.
[19]	Zhang Lei;Chen Jingchao;Yu Jie .[J].Rare Metals and Cemented Carbides(稀有金属与硬质合金),2006,34(12):28.
[20]	Yamashita T;Kelly P M;Cavallaro P et al.[J].Acta Materialia,1998,46(09):2977.
[21]	Du Ting .[J].Acta Metall Sin(金属学报),1997,33(01):69.
[22]	Yuan Guangyin;Sun Yangshan;Wang Zhen .[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),1999,9(12):779.
[23]	Yuan Guangyin;Zhang Weiming;Sun Yangshan .[J].Journal of Southeast University(东南大学学报),1999,29(05):115.
[24]	Yuan Guangyin;LüYizhen;Zeng Xiaoqin et al.[J].Acta Metall Sin(金属学报),2001,37(01):23.

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