Esmaeil Jafari
材料科学技术（英）
The influence of deformation temperature, strain rate and alloying elements such as chromium, nickel, copper, on corrosion resistance of a 304 stainless steel after plastic deformation was investigated. The techniques employed were tensile test at room and elevated temperature, deep drawing tests at various strain rates, X-ray diffraction test and potentiodynamic and cyclic polarization, metallography by optical and scanning electron microscopy. Results showed that chromium, nickel and copper had a significant effect on corrosion resistance of steel after plastic deformation. It was observed that corrosion resistance after plastic deformation was a function of deformation temperature and alloying elements.
关键词:
Corrosion resistance
,
Plastic Deformation
,
Stainless Steel
,
Phase Transformation
,
Polarization Test
陈德香
,
黄俊霞
,
才筝
上海金属
采用电化学法、5％硫酸腐蚀试验、65％硝酸晶间腐蚀法和42％沸腾氯化镁法等对不同氮含量的SU301L不锈钢的耐点蚀、均匀腐蚀、晶间腐蚀和应力腐蚀性能进行了评价,探讨氮对亚稳定奥氏体不锈钢SUS301L耐蚀性影响的规律.试验结果表明:氮的加入提高了SUS301L不锈钢的耐点蚀性能,当氮含量在0.1％ ～0.15％内变化时,对材料的耐应力腐蚀能力无显著影响.适量的氮能有效阻碍晶界碳化铬的析出,提高SUS301L钢的耐晶间腐蚀性.当氮含量达到0.15％以上,晶界氮化铬的析出会造成SUS301L钢的耐晶间腐蚀性能的下降.
关键词:
SUS301L
,
不锈钢
,
氮元素
,
耐蚀性能
,
腐蚀
李冬刚
,
吴燕萍
,
史彩霞
上海金属
以高炉铁水或镍铁水为主原料,分别对铬系和铬镍系不锈钢的脱磷效果、耗热量、生产效率、工艺操作和生产成本等方面进行了比较.分析了转炉作为预处理炉冶炼不锈钢的冶金特点.结果表明:以高炉铁水或镍铁水为主原料时,与喷吹脱磷相比,转炉脱磷具有较大的工艺优势和成本优势.
关键词:
转炉
,
不锈钢
,
预处理
,
冶炼
,
脱磷
童璐
,
向顺华
,
郭水华
,
王俊
上海金属
提高酸洗效率,从源头减少废酸与废水是不锈钢绿色生产的关键之一.采用刷辊设备对430不锈钢表面氧化铁皮进行物理清除以缩短酸洗时间,并研究经不同刷辊处理的不锈钢除鳞效果.研究表明,采用两种轮复合处理,不锈钢酸洗前后的粗糙度均是最小值;在酸洗温度为20℃的条件下,可将酸洗时间由121 s缩至64 s,50℃时同样可减少酸洗时间至一半,并且酸洗后微观形貌平整均匀.
关键词:
除鳞
,
刷辊
,
不锈钢
,
酸洗
