2011 Fiscal Year Final Research Report
Development of age-hardenable wrought magnesium alloys with high strength
| Project/Area Number |
21360348
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Nagaoka University of Technology (2010-2011)
National Institute for Materials Science (2009) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HONO Kazuhiro 独立行政法人物質・材料研究機構, 磁性材料ユニット, フェロー (60229151)
MENDIS Chamini 独立行政法人物質・材料研究機構, 磁性材料ユニット, NIMSポスドク研究員 (60536704)
KAMADO Shigeharu 長岡技術科学大学, 工学部, 教授 (30152846)
HOMMA Tomoyuki 長岡技術科学大学, 工学部, 助教 (50452082)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 強度 / 靭性 / 破壊 / 疲労 / クリープ / 応力腐食割れ / 超塑性 / 摩耗 |
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| Research Abstract |
In this work, the potential for development of high strength wrought Mg alloys with age-hardenability was studied to expand the use of Mg products in transportation field. The age-hardening response of Mg-Ca based alloys enhanced by the addition of Al and In. The Al added alloys form the monolayer G. P. zones on the basal planes, while the In added ones do the planar precipitates on the pyramidal planes. The pyramidal precipitates have been known to give effective precipitation hardening rather than the basal ones, so the knowledge obtained from the research of this alloy can be useful for development of new age-hardenable Mg alloy. Based on these results, we successfully achieved ultra-high strength extruded Mg-Al-Ca-Mn alloys with tensile proof stress of over 400 MPa.
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