王克鲁,鲁世强,李鑫,郑海忠,董显娟,杨化娟

• 1:南昌航空大学材料学院

摘要(Abstract)：

在热轧试验的基础上,采用多功能材料试验机及光学显微镜,研究了不同冷却制度对700MPa级低碳贝氏体钢组织和性能的影响。结果表明,根据冷却制度的不同,所研究低碳贝氏体钢的微观组织表现为准多边形铁素体、粒状贝氏体和板条贝氏体等的比例、形态及尺寸的不同。轧后空冷时,试样的微观组织主要为准多边形铁素体和粒状贝氏体,其强度较低,但塑性较好;轧后水冷时,试样的微观组织主要为板条贝氏体,具有较高的强度和较低的伸长率;轧后油淬时,试样的微观组织主要为板条贝氏体、粒状贝氏体、准多边形铁素体及针状铁素体的复合组织,这种组织具有较好的强度和塑性配合;轧后水冷至531℃而后空冷至室温时,试样的微观组织主要为粒状贝氏体,具有高的屈服强度和屈强比。

关键词(KeyWords)： 冷却制度;低碳贝氏体钢;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 江西省自然科学基金项目(0605123)

作者(Author): 王克鲁,鲁世强,李鑫,郑海忠,董显娟,杨化娟

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