CAJ | 학술논문

通过光学显微镜、电子显微镜、差热分析以及抗拉和蠕变性能测试等手段，研究和比较0.6%Ca(质量分数)添加对Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y-1.2Mn-0.9Sc镁合金铸态组织和力学性能的影响。结果表明：添加0.6%Ca 能细化 Mg-3Ce-1.2Mn-0.9Sc 和 Mg-4Y-1.2Mn-0.9Sc 合金的晶粒。同时，添加0.6% Ca 也能有效改善Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y-1.2Mn-0.9Sc合金的抗拉性能。此外，添加0.6%Ca能改善Mg-3Ce-1.2Mn-0.9Sc合金的蠕变性能，但对 Mg-4Y-1.2Mn-0.9Sc 合金的蠕变性能是不利的。少量 Ca 对 Mg-3Ce-1.2Mn-0.9Sc 和Mg-4Y-1.2Mn-0.9Sc合金蠕变性能的不同影响可能与Ce和Y在Mg中的固溶度存在差异有关。
통과광학현미경、전자현미경、차열분석이급항랍화연변성능측시등수단，연구화비교0.6%Ca(질량분수)첨가대Mg-3Ce-1.2Mn-0.9Sc화Mg-4Y-1.2Mn-0.9Sc미합금주태조직화역학성능적영향。결과표명：첨가0.6%Ca 능세화 Mg-3Ce-1.2Mn-0.9Sc 화 Mg-4Y-1.2Mn-0.9Sc 합금적정립。동시，첨가0.6% Ca 야능유효개선Mg-3Ce-1.2Mn-0.9Sc화Mg-4Y-1.2Mn-0.9Sc합금적항랍성능。차외，첨가0.6%Ca능개선Mg-3Ce-1.2Mn-0.9Sc합금적연변성능，단대 Mg-4Y-1.2Mn-0.9Sc 합금적연변성능시불리적。소량 Ca 대 Mg-3Ce-1.2Mn-0.9Sc 화Mg-4Y-1.2Mn-0.9Sc합금연변성능적불동영향가능여Ce화Y재Mg중적고용도존재차이유관。
The effects of the addition of 0.6% Ca (mass fraction) on the as-cast microstructure and mechanical properties of the Mg-3Ce-1.2Mn-0.9Sc and Mg-4Y-1.2Mn-0.9Sc magnesium alloys were investigated and compared by optical microscopy and scanning electron microscopy, differential scanning calorimetry analysis, and tensile and creep tests. The results indicate that the addition of 0.6%Ca to the Mg-3Ce-1.2Mn-0.9Sc and Mg-4Y-1.2Mn-0.9Sc alloys can refine the grains of the two alloys. At the same time, the addition of 0.6% Ca to the Mg-3Ce-1.2Mn-0.9Sc and Mg-4Y-1.2Mn-0.9Sc alloys can effectively improve the tensile properties of the two alloys. In addition, the addition of 0.6% Ca can also improve the creep properties of the Mg-3Ce-1.2Mn-0.9Sc alloy but is not beneficial to the creep properties of the Mg-4Y-1.2Mn-0.9Sc alloy. The different effects of minor Ca on the creep properties of the Mg-3Ce-1.2Mn-0.9Sc and Mg-4Y-1.2Mn-0.9Sc alloys are possibly related to the difference in the solid solubilities of Ce and Y in Mg.