摘要
研究了不同Zn含量对Mg-Zn-Y-Zr合金组织和力学性能的影响。结果表明,当Zn含量较低时,合金微观组织由α-Mg和I相组成,而当Zn含量较高时,组织中会出现W相。随着Zn含量的增加,合金的抗拉强度逐渐增加,而伸长率逐渐下降。当Zn含量为6.0wt%时,合金的抗拉强度达到最大值为244.6MPa,再增加Zn含量,由于微观组织中W相的出现,合金的抗拉强度有所降低。
Effects of different Zn contents on microstructures and mechanical properties of Mg-Zn-Y-Zr alloys were systematically studied.The results show that,when the Zn content is low,the microstructures of Mg-Zn-Y-Zr alloys are composed of I-phase and α-Mg;while the Zn content is high,W-phase appears in the microstructures.With the increase of the content of Zn,the tensile strength increases gradually,while the elongation rate decreases gradually.When the Zn content is 6.0wt.%,the tensile strength of alloys reaches to the maximum value as 244.6MPa,while continuing to increase the content of Zn,the tensile strength of alloys decreases due to the appearing of W-phase in microstructures.
出处
《铸造技术》
CAS
北大核心
2010年第10期1299-1302,共4页
Foundry Technology
