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轧制变形对含硫易切削钢中硫化物的影响
英文标题:Influence of rolling deformation on sulfide in free-cutting steel containing sulfur
作者:王英虎 
单位:1.攀钢集团研究院有限公司 成都先进金属材料产业技术研究院有限公司   2.海洋装备用金属材料及其应用国家重点试验室 
关键词:轧制变形 含硫易切削钢 硫化锰 形貌 长宽比 
分类号:TG335.3
出版年,卷(期):页码:2020,45(11):120-125
摘要:

 利用金相显微镜、扫描电镜、能谱仪和ASPEX扫描电镜-能谱仪研究了轧制变形对含硫易切削钢中硫化锰形貌、长宽比、尺寸及数量的影响。研究结果表明:铸态试验钢中的硫化锰在基体中单独形核析出,近似球形或纺锤形,任意分布;Ф45 mm试验钢中的硫化锰近似椭圆形;Ф16 mm试验钢中除了椭圆形的硫化锰,开始有细长条形的硫化锰出现;Ф5.5 mm试验钢中的硫化锰呈细长条形;硫化锰在1200 ℃轧制均热的过程中熟化长大、数量减少;随着试验钢的尺寸不断变细,轧制变形量增大、硫化锰的变形加剧、长宽比增加;硫化锰在轧制过程中发生断裂,尺寸减小、数量增加。

 The influences of rolling deformation on the morphology, length-width ratio, size and number of manganese sulfide in the free-cutting steel containing sulfur were studied by OM, SEM, EDS and ASPEX SEM-EDS. The results show that the manganese sulfide in as-cast test steel nucleates and precipitates separately in the matrix, which is similar to globular and spindle shape with arbitrary distribution. In the test steel of Ф45 mm, the shape of manganese sulfide is approximately elliptical, and in the test steel of Ф16 mm, except for elliptical manganese sulfide, there is elongated manganese sulfide. However, in the test steel of Ф5.5 mm, the manganese sulfide is elongated, and the number of manganese sulfide decreases as it matures and grows up during the rolling process at 1200 ℃. In addition, as the size of test steel becomes thinner, the rolling deformation amount increases, the deformation of manganese sulfide increases and the length-width ratio increases. In the rolling process, manganese sulfide breaks, its size decreases and its number increases.

基金项目:
作者简介:
王英虎(1992-),男,硕士,工程师 E-mail:hihihowareyou@163.com
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