锡青铜再结晶对拉伸性能的影响  

Effect of Recrystallization of Tin Bronze on Tensile Properties

作　　者：刘状[1] 陈亮维[1] 惠均 苏晓波[2] 亓岳岩 武兴盛 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]中北大学材料科学与工程学院,山西太原030051 [3]中北大学仪器与电子学院,山西太原030051

出　　处：《铸造技术》2017年第12期2843-2846,共4页Foundry Technology

摘　　要：对衬套用QSn7-0.2在640~760℃温度下进行了热挤压,研究了挤压过程中温度和塑性形变对锡青铜的再结晶程度和塑性的影响。结果表明,随着再结晶晶粒持续增大,屈服强度和抗拉强度降低。在塑性升高的同时,由于元素的扩散,在720℃出现了断面收缩率和平均伸长率的下降现象。The bushing material QSn7-0.2 was extruded at 640 ℃ to 760 ℃, the degree of recrystallization and plastic during the deformation were investigated. The results show that the yield strengthen and tensile strengthen will be decreased with recrystallizing grains continuously enlarging. The cross section shrinkage rate and the average elongation will decline at 760 ℃ with the plastic increasing and the element diffusion.

关 键 词：锡青铜 再结晶 拉伸强度 

分 类 号：TG146.11[一般工业技术—材料科学与工程]