Mg-11mass%Li-10mass%Zn合金の時効析出 (マグネシウム<特集>)
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概要
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Precipitation behaviour of Mg-11%Li-10%Zn ternary alloy during aging between room temperature and 473K was investigated. Age-hardening phenomena was observed on aged specimens except at 473K. Metastable MgLi2Zn (θ') phase precipitated at a hardening stage. Stable α and θ phases were observed at an over-aging stage. By means of transmission electron microscopy (TEM), orientation relationships among matrix and θ', α and θ phases were determined as follows;(011)β//(011)θ', [100]β//[100]θ'(011)β//(0001)α, [111]β//[2110]α(111)β//(112)θ, [110]β//[111]θ.By the consideration of the orientation relationships and lattice constants of precipitates, it can be concluded that the increase in hardness during aging is due to the coherent strain between θ' and the matrix and that the decrease in hardness is a result of relaxing the strain by precipitation of α phase.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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