不锈钢金相试样上类夹渣缺陷形成原因分析  

Cause analysis of slag inclusion-like defects on stainless steel metallographic specimen

作　　者：田伟 常松 孙信阳 周长申 Tian Wei;Chang Song;Sun Xinyang;Zhou Changshen(Testing Center,AVIC Shangda Superalloy Material Co.,Ltd.,Xingtai Hebei 054800,China)

机构地区：[1]中航上大高温合金材料股份有限公司检测中心,河北邢台054800

出　　处：《金属热处理》2022年第5期270-273,共4页Heat Treatment of Metals

摘　　要：对经过磨平、粗磨、细磨和精抛环节后多种牌号不锈钢中非金属夹杂物评级时,发现检验面存在许多形状不规则的类夹渣冶金缺陷。用光学显微镜、扫描电镜对该缺陷形貌进行观察,并采用能谱仪对缺陷化学成分进行定性定量分析,同时采用现场质量管理中的人、机、料、环、法、测六要素从炼钢到制备样品整个环节逐一对比排查,并进行不同材质的砂纸对比试验。结果表明,不锈钢金相试样的类夹渣缺陷主要含有O、Al、Zr元素,是在磨平阶段使用锆刚玉砂纸造成的。Many irregular slag inclusion-like defects were found on the inspection surface of different stainless steels after grinding, coarse grinding, fine grinding and fine polishing for rating of the non-metallic inclusions. The morphology of defects was observed by means of optical microscope and scanning electron microscope, and the chemical composition of the defects was analyzed qualitatively and quantitatively by means of energy dispersive spectrometer. Meanwhile, the six elements of on-site quality management, namely human, machine, material, environment, method and measurement were used to conduct comparison and examination one by one in the whole process from steelmaking to specimen preparation, and to conduct the sandpaper comparison test with different materials. The results show that the slag inclusion-like defects mainly contain oxygen, aluminum and zirconium, and are caused by using zircon corundum sandpaper during grinding.

关 键 词：不锈钢 制样 类夹渣缺陷 锆刚玉砂纸 

分 类 号：TG115.211.2[金属学及工艺—物理冶金]