直流磁场对Mg97Y2Cu1合金凝固组织、结晶织构及力学性能的影响

Effect of DC magnetic field on solidified structure, crystal texture and mechanical properties of Mg97Y2Cu1 alloy

摘要:

本文研究了0~1.2T的直流磁场对长周期结构增强Mg97Y2Cu1合金凝固组织、结晶织构及力学性能的影响。研究结果表明：直流磁场可以细化合金的初生相，减少α-Mg基体中Y元素的含量。随着磁场强度的增加， 面织构先加强后减弱，其转折点为0.9T， 面织构逐渐增强；合金的铸态抗拉强度和伸长率总体上逐渐提高，当磁场强度为0.9T时，合金的综合力学性能最好，其抗拉强度和伸长率较无磁场处理的试样相比分别提高了96.6％和61.1％。

Abstract:

Solidified structure, crystal texture and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure under DC magnetic field(0~1.2T) were studied. The results show that primary grain size and content of Y in matrix of the alloy decrease with DC magnetic field treatment. With the increase of magnetic field strength, the plane texture enhances firstly, then weakens, and the turning point is 0.9T, the plane texture enhances gradually. The strength and elongation of the alloy increase gradually in general. When the magnetic field strength is 0.9T, comprehensive mechanical properties of the alloy are the best. Tensile strength and elongation of the alloy are increased by up to 96.6% and 61.1%, respectively, compared with the sample without treatment.