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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
【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.
【Abstract】 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;
【Key words】 spheroidal graphite iron; plastic deformation; graphite morphology; refinement;
【Key words】 spheroidal graphite iron; plastic deformation; graphite morphology; refinement;
【基金】 国家自然科学基金(50171046);山西省自然科学基金(20021051)
- 【文献出处】 材料科学与工艺 ,Materials Science and Technology , 编辑部邮箱 ,2008年02期
- 【分类号】TG143.5
- 【被引频次】4
- 【下载频次】128