期刊
MATERIALS & DESIGN
卷 90, 期 -, 页码 7-12出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.10.093
关键词
Metals and alloys; Microstructure; Mechanical properties; Ultra-fine grains
资金
- National Natural Science Foundation of China [51474043]
- Ministry of Science and Technology of China [2014DFG52810]
- Ministry of Education of China [SRFDR 20130191110018, CDJZR13130086]
- Chongqing Municipal Government [CSTC2013JCYJC60001]
- Natural Science Foundation Project of Chongqing Science and Technology Commission [CSTC2012ggB50003, CSTC2013jjB50006]
HighMncontent added toMg-6Zn-0.3Ca extruded alloy remarkably refined dynamically recrystallized (DRXed) grains, and enhanced tensile and compressive strengths without sacrificing ductility. The large amount of fineMn precipitates of homogenized alloy that formed effectively restricted newgrain growth during the subsequent extrusion and generated ultra-fine DRXed grains. The ultra-fine DRXed grains and large amount of precipitates essentially enhanced the strength and improved the anisotropy of alloy. The Mg-Mn-x ternary systems that potentially formed ultra-fine grains were also discussed. (C) 2015 Elsevier Ltd. All rights reserved.
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