Analysis on Surface Upwarp Defects of Heat-resistant Stainless Steel Plate 310S
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摘要: 利用扫描电镜和金相显微镜对310S耐热不锈钢中厚板表面翘皮缺陷进行了分析。结果表明,引起翘皮的主要原因是在浇铸过程中保护渣的卷入及轧制过程中氧化铁皮的压入,翘皮缺陷沿表层向基体呈现不同的形态及分布,缺陷内部以铬的氧化物夹杂为主,表层以铁、硅的氧化物夹杂为主。Abstract: Surface upwarp defects of heat-resistant stainless steel plate 310 S were investigated by means of optical microscope(OM) and scan electron microscope(SEM).The results show that the main causes of surface upwarp defects are the protective slag entrapped in the process of casting and iron oxide pressed during hot rolling.The surface upwarp defects appears different morphology and distribution profile through the surface to the matrix.The oxide inclusions of chromium are found in the internal of defects,but oxide inclusions of iron and silicon are present on surface of defects.
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Key words:
- 310S /
- heat-resistant stainless steel /
- upwarp defects /
- optical microscope /
- oxide inclusions
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