Development of an ecologically friendly nitrogen alloyed martensitic stainless steel
- 作者：QIN BinJIANG LaizhuMA Yongzhu
- 会议时间：2013-06-01
- 关键词：martensitic stainless steel ; nitrogen alloy ; food contacted ; corrosion resistance ; metal migration ; mechanical properties
- 作者单位：Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China
- 母体文献：第五届宝钢学术年会论文集
- 会议名称：第五届宝钢学术年会
- 会议地点：上海
- 主办单位：中国金属学会
- 语种：chi
摘要
Carbon addition into martensitic stainless steel for making kitchen knives is conventionally adopted to gain high enough hardness.The corrosion resistance,however,is dramatically reduced with carbon addition.More importantly,the amount of some hazardous elements released for such type of martensitic stainless steels in contact with food might be higher than the upper limit for the articles in contact with food according to the standards being applied worldwide.Accordingly,a new ecologically friendly nitrogen alloyed martensitic stainless steel has been developed.The nitrogen addition for substituting carbon in the martensitic stainless steel can increase the hardness and the corrosion resistance simultaneously.Of more importance is its much better resistance against the release of the hazardous elements than the conventional carbon alloyed steel.This paper summarizes the physical metallurgy,the processing technology and the microstructure and the mechanical properties of the developed ecologically friendly nitrogen alloyed martensitic stainless steel.