摘要
在Mg_(93)Zn_6Y合金凝固过程中施加超声处理,主要研究超声功率对合金铸态组织和力学性能的影响。结果表明,超声处理对Mg_(93)Zn_6Y合金铸态组织中的初生α-Mg和准晶相均具有显著的细化效果。随着超声功率增加,其细化效果逐渐加强,初生α-Mg相的形貌由粗大树枝晶状转变为细小花瓣状,准晶相由粗大的连续网络状转变为细小的孤岛状和颗粒状。当超声功率为600W时,合金的抗拉强度和伸长率分别达到215MPa和3.1%。相比未处理的合金,分别提升了51%和182%,表现出较好的综合力学性能。
The effects of ultrasonic power on microstructure and mechanical properties of the Mg93Zn6Y alloy were investigated.The results show that the primaryα-Mg and icosahedral phase（I-phase）in the Mg93Zn6Y alloy can be refined by ultrasonic treatment.With increasing in ultrasonic power,the primaryα-Mg and I-phase are further refined.The morphology of primaryα-Mg is modified from developed dendrite to fine rosette structure.Moreover,the morphology of I-phase is transformed from continuous bulk skeletal structure to almost discontinuous net shape and particle.The tensile strength and elongation of Mg93Zn6Y alloy treated by ultrasonic treatment at 600 Wreach 215MPa and 3.1%,which are increased by 51%and 182%,respectively,compared with those of the alloy without ultrasonic treatment.
作者
周维
邓鹏
胡鹏鹤
张云波
张磊
Zhou Wei Deng Peng Hu Penghe Zhang Yunbo Zhang Lei(School of Aeronautical Manufacture Engineering, Nanchang Hangkong Universit)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2016年第10期1096-1099,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51401102)
江西省教育厅科学技术项目(GJJ150736)
