摘要
对比研究了1.4T的直流磁场处理,1%的Zr处理以及直流磁场和Zr复合处理对长周期结构增强Mg97Y2Cu1合金凝固组织和力学性能的影响。结果表明,添加Zr后,合金中生成了少量CuZr2相,且凝固组织得到了显著细化,而无论是否加Zr,直流磁场对合金凝固组织的影响均不明显;添加Zr后,合金出现了许多新的衍射峰,而单独施加直流磁场处理后合金在(100)晶面的衍射峰强度远远高于其他晶面;在磁场和Zr复合作用下,合金的衍射峰变化程度介于单一的磁场处理和Zr处理之间;直流磁场或Zr均可以有效改善合金的力学性能,且在磁场和Zr的复合作用下,合金的力学性能最高,其抗拉强度和伸长率分别为194.5 MPa和6.01%,与未处理时相比,分别提高了63.45%和11.30%。
The effects of DC magnetic field treatment of 1.4T,1% Zr and compound treatment of DC magnetic field and Zr on solidified structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure were investigated comparatively.The results show that CuZr2 phase can be observed in the alloy,and solidification structure in the alloy can be refined markedly with Zr addition.Whether or not with Zr addition,the influence of DC magnetic field on solidification structure of the alloy can be neglected.Many new diffraction peaks appear in the alloy after adding Zr,while the diffraction peak intensity of crystal plane（100）of the alloy is the much higher than that of other planes under DC magnetic field treatment.Under the combined action of magnetic field and Zr,the diffraction peak of the alloy is changed between single magnetic treatment or Zr treatment.DC magnetic field or Zr can improve effectively mechanical properties of the alloy,and the combined effect of DC magnetic field and Zr exhibits desirable.Tensile strength and elongation of the alloy reach 194.5MPa and 6.01%,which are increased by up to 63.45% and 11.30%,respectively,compared with those of the alloy without treatment.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2016年第11期1225-1228,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51261026)
