多次多向等温变形对球墨铸铁石墨形态的影响  

Influence of the repeated and multidirectional isothermal deformation on the graphite morphology of spheroidal graphite iron

作　　者：杜晋峰[1] 梁伟[1] 赵兴国[1] 张峰[1] 翟丽珍[1] 

机构地区：[1]太原理工大学材料科学与工程学院,太原030024

出　　处：《材料科学与工艺》2008年第2期271-273,共3页Materials Science and Technology

基　　金：国家自然科学基金(50171046);山西省自然科学基金(20021051)

摘　　要：研究了球墨铸铁在900±10℃下,经不同方向多次压缩变形后石墨的形态变化.结果表明:单向压缩后石墨球变成近似平行分布的石墨片,经多向压缩后石墨片分裂;沿不同方向多次变形,石墨球在不同方向应力作用下被剪为小的石墨颗粒,起到了细化石墨球的作用.The graphite morphology evolution of spheroidal graphite iron after deformation in different directions at 900±10℃ was studied. The results show that some of graphite spheres become approximately parallel graphite flakes after single-direction deformation. The parallel graphite flakes split after further deformation in different directions. With specimen deformed in 3 perpendicular directions repeatedly, the graphite spheres are split into the fine graphite particles.

关 键 词：球墨铸铁 塑性变形 石墨形态 组织细化 

分 类 号：TG111.7[金属学及工艺—物理冶金]