摘要
研究了Si、Y对Mg-Zn-Al合金显微组织和力学性能的影响。结果表明:Si、Y均能提高合金的抗拉强度和硬度,特别对高温抗拉强度的提高效果更为明显。合金强度的提高主要得益于组织中析出相的弥散强化作用。Mg-6.0Zn-1.5Al-0.15Mn-1.2Si-0.5Y铸造镁合金的显微组织主要由α(Mg)基体、β(MgZn)相、λ(Mg2Si)相和ω(SiY)相组成。
The effects of silicon and yttrium on the microstructure and mechanical properties of Mg-Zn-Al magnesium alloy were studied. The results show that Si and Y improve the tensile strength and hardness of the alloy separately, especially increase the tensile strength of high temperature effectively. And the increase of the high temperature mechanical strength is due to the strengthening function of the diffused precipitate particle. The as-cast microstructure organization of the magnesium alloy of Mg-6.0Zn-1.5Al-0.15Mn-1.2Si-0.5Y is composed mainly of α (Mg) matrix, β (MgZn) phase ,λ (Mg_2Si) phase and ω(SiY)phase.
出处
《热加工工艺》
CSCD
北大核心
2004年第12期7-9,共3页
Hot Working Technology
基金
国家自然科学基金资助项目(50371047)
