2019 Fiscal Year Annual Research Report
Regulating twin boundary mobility to develop high damping and high strength magnesium alloys
| Project/Area Number |
18K14024
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| Research Institution | Tohoku University |
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Principal Investigator |
崔 玉傑 東北大学, 金属材料研究所, 特任助教 (30796214)
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| Project Period (FY) |
2018-04-01 – 2020-03-31
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| Keywords | Twin boundary / Pre-strain / Al atoms / Segregation |
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| Outline of Annual Research Achievements |
Twinning is an important deformation mode in Mg and its alloys, which has significant influences on mechanical properties of Mg alloys.
The effects of pre-strain and Al atoms on twin boundary motion in Mg and its alloys were investigated.
Smaller twins with lower pre-strain exhibit higher twin boundary mobility than larger twins. The Al atoms were found to restrict both twin growth and detwinning.
Our findings indicate that altering pre-strain and alloying element concentration is an effective way to tailor twin boundary mobility, providing a basis for developing new industrial Mg alloys.
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