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Journal Articles

Effect of aluminum or zinc solute addition on enhancing impact fracture toughness in Mg-Ca alloys

Hase, Takayuki*; Otagaki, Tatsuya*; Yamaguchi, Masatake; Ikeo, Naoko*; Mukai, Toshiji*

Acta Materialia, 104, p.283 - 294, 2016/02

 Times Cited Count:37 Percentile:89.49(Materials Science, Multidisciplinary)

We measured the impact toughness of three alloys (Mg, Mg-0.3 at.% Ca-0.6 at.% Zn, and Mg-0.3 at.% Ca-0.6 at.% Al) by the impact three-point bending test. The plastic deformability and impact toughness were higher in the ternary alloys than in pure Mg. The generalized stacking fault energy and grain boundary cohesive energy were estimated by first-principles calculations for Mg, binary Mg-Ca, ternary Mg-Ca-Zn, and ternary Mg-Ca-Al alloys. The calculation results agreed with the trend in the experimental results. We suggest that addition of Ca along with Zn or Al reduced plastic anisotropy and strengthened the grain boundaries, leading to higher in impact toughness of Mg alloys.

Journal Articles

Effect of solute segregation on fracture behavior of Mg alloy

Kawa, Tomoaki*; Yamaguchi, Masatake; Ikeo, Naoko*; Mukai, Toshiji*

Magnesium Technology 2015, p.197 - 200, 2015/03

no abstracts in English

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