| Project/Area Number |
22860028
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
XU Shiwei Nagaoka University of Technology, 工学部, 外国語アドミニストレータ (50582780)
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| Project Period (FY) |
2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥1,638,000 (Direct Cost: ¥1,260,000、Indirect Cost: ¥378,000)
Fiscal Year 2010: ¥1,638,000 (Direct Cost: ¥1,260,000、Indirect Cost: ¥378,000)
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| Keywords | ユビキタス元素 / 低コスト高強度・耐熱マグネシウム合金 / 動的再結晶 / 規則GPゾーン / 加工熱処理 / 機械的性質 / 合金設計指針 / 最適製造プロセス条件 |
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| Research Abstract |
Hot extrusion was performed on the as-cast Mg-3.6Al-3.3Ca-0.4Mn and Mg-6.0Zn-1.8Ca-0.4Mn (mass%) alloys containing only ubiquitous alloying elements. Dynamical recrystallization (DRX) process during hot extrusion and the relationship between microstructures and mechanical properties of the as-extruded samples were investigated. The results show that the as-extruded Mg-3.6Al-3.3Ca-0.4Mn alloy sample exhibited a high tensile 0.2% proof stress of 410 MPa, due to the combined effect of nano-scale precipitates, fine dynamically recrystallized (DRX) grains pinned with fragmented intermetallic compounds and a strong basal texture. This strength and corresponding ductility are even superior to those of the T6-treated heat-resistant 4032 aluminum alloy. A new high-strength low-cost Mg alloy has been developed in Japan.
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