T6处理对Mg-10Gd-3Y-0.6Zr合金组织及拉伸性能的影响（英文）
来源期刊：材料与冶金学报2010年第3期
论文作者：林丹 王磊 孟凡强 崔建忠 乐启炽
文章页码：217 - 457
摘 要：The effects of solution and ageing treatment （T6） on microstructure and tensile properties of as-extruded Mg-10Gd-3Y-0.6Zr （mass fraction. %） alloy were investigated. The results show that after T6 treatment, the diameter of grain increases to 20 μm. As the second phases dissolve into the matrix, the smaller and denser β′ phases precipitate inside the grains. After T6-treatment, both yield strength （TYS） and ultimate tensile strength （UTS） are increased. Comparing with that in only ageing condition （T5）, the UTS and TYS increased from 365 MPa,285 MPa to 400 MPa,310 MPa, respectively, but the elongation decreased from 7.0% to 3.5%. It has been found that the effects of precipitates on the strength are stronger than that of the growth of grain size.
林丹1，王磊1，孟凡强2，崔建忠1，乐启炽3
1. 东北大学2. Key Laboratory for Anisotropy and Texture of Materials,Ministry of Education,Northeastern University3. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education,Northeastern University
摘 要：The effects of solution and ageing treatment （T6） on microstructure and tensile properties of as-extruded Mg-10Gd-3Y-0.6Zr （mass fraction. %） alloy were investigated. The results show that after T6 treatment, the diameter of grain increases to 20 μm. As the second phases dissolve into the matrix, the smaller and denser β′ phases precipitate inside the grains. After T6-treatment, both yield strength （TYS） and ultimate tensile strength （UTS） are increased. Comparing with that in only ageing condition （T5）, the UTS and TYS increased from 365 MPa,285 MPa to 400 MPa,310 MPa, respectively, but the elongation decreased from 7.0% to 3.5%. It has been found that the effects of precipitates on the strength are stronger than that of the growth of grain size.
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