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由于缺镍,铁素体耐蚀钢逐渐成为最重要的结构材料之一,它较广泛地应用于家电设备、汽车制造及其它领域中。但是,由于铁素体耐蚀钢具有脆性倾向,它的生产及使用受到了限制。铁素体耐蚀钢的脆性倾向是由下列两方面因素引起的:在高于1 000℃的温度下长时间保温,铁素体钢产生脆性,长时间保温导致铁素体钢内部晶粒的异常长大和晶界上杂质浓度的增加;铁素体钢在450℃～550℃温度区间,也将产生“475℃”脆性。为了改进铁素体耐蚀钢板材和带材的生产工艺,作者研究了热变形温度对板带材组织形成和脆性产生
Due to the lack of nickel, ferritic corrosion-resistant steel has gradually become one of the most important structural materials, it is widely used in home appliances, automotive manufacturing and other fields. However, its production and use are limited due to the brittle tendency of ferritic corrosion resistant steels. The brittleness tendency of ferritic corrosion-resistant steel is caused by two factors: long time heat preservation at a temperature higher than 1 000 ℃, brittleness of ferritic steel and long-time heat preservation leading to the growth of grain in ferritic steel Abnormal growth and increased grain boundary impurity concentration; ferritic steel in the temperature range of 450 ℃ ~ 550 ℃, will also produce “475 ℃” brittleness. In order to improve the production process of ferritic corrosion-resistant steel sheet and strip, the author studied the heat distortion temperature on the plate strip formation and brittleness