摘要
采用定向凝固工艺,研究了在一定的温度梯度下,结晶速度对Mg-1.5 Mn-Al合金凝固组织和力学性能的影响。研究表明,随着结晶速度的逐渐增大,Mg-1.5Mn-Al合金通过定向凝固形成的柱状晶的宽度逐渐变窄,同时合金抗拉强度也逐渐增大。当结晶速度为100μm/s时,合金的抗拉强度达到193 MPa,与铸态合金相比,提升了124%.
The effect of crystallization rate on the microstructure and mechanical properties of Mg-1.5Mn-Al alloy was investigated adopting directional solidification method.The results indicated the columnar crystal formed after directional solidification was becoming finer with the increasing crystallization rate,and consequently the tensile strength of the alloy was increasing.Compared with the as-cast condition,using directional solidification at the crystallization rate of 100um/s,the ultimate tensile strength reached to193 MPa,which is enhanced by 124%.
出处
《铸造设备与工艺》
2015年第3期35-37,共3页
Foundry Equipment & Technology
基金
山西省自然科学基金资助(2014011015-3)
晋城市科技计划项目
关键词
镁合金
定向凝固
结晶速度
组织
性能
Mg-1.5Mn-Al alloy
directional solidification
crystallization rate
microstructure
mechanical property
