摘要
通过复合添加Al4C3和合金化元素Ce来改善ZM5镁合金的组织和力学性能。结果表明,Al4C3和Ce的添加使得ZM5合金的组织显著细化,Al4C3和Ce的复合添加产生新相Al4Ce。由DTA分析可知,Al4C3与Ce的添加,使得ZM5合金在较小的过冷度下就能得到细晶组织。拉伸试验测试结果表明,在T6条件下,Al4C3和Ce的添加能显著提高ZM5合金的抗拉强度,延伸率虽有提高,但其绝对值偏低。Al4C3和Ce的添加使得ZM5合金的断裂机制从解理断裂变为准解理断裂。
Al4C3 and Ce were added into ZM5 magnesium alloy to refine its microstructure and to improve mechanical property. The results indicate that the combined addition of Al4C3 and alloying element Ce causes a large decrease of grain size, and a new phase AI4Ce forms. Fine-grained microstructure of ZM5 alloy can be obtained under the condition of lower undercooling after the addition of Al4C3 and Ce through DTA analysis. Tensile tests show that the addition of Al4C3 and Ce enhances the tensile strength remarkably and improves the elongation with low values in the case of T6 condition. The fracture mechanism of ZM5 alloy changes from cleavage fracture to quasi-cleavage fracture with the addition of Al4C3 and Ce
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2014年第7期1774-1778,共5页
Rare Metal Materials and Engineering
基金
山西省科技攻关项目(20090321085)
山西省高等学校大学生创新创业训练项目(2011238)
关键词
ZM5镁合金
碳化铝
晶粒细化
力学性能
ZM5 magnesium alloy
aluminium carbide
grain refinement
mechanical property
