喷射成形超高碳钢超塑性变形后的微观组织

材料工程, 2004, (6): 20-23. doi: 10.3969/j.issn.1001-4381.2004.06.005

喷射成形超高碳钢超塑性变形后的微观组织

李小军 ^1, , 吴建生 ^2, , 章靖国 ^3, , 史海生 ^4, , 林一坚 ^5,

1.上海交通大学教育部高温材料及高温测试开放重点实验室,上海,200030

2.上海交通大学教育部高温材料及高温测试开放重点实验室,上海,200030

3.上海宝钢研究院前沿技术研究所,上海,201900

4.上海宝钢研究院前沿技术研究所,上海,201900

5.上海宝钢研究院前沿技术研究所,上海,201900

关键词：喷射成形 , 超高碳钢 , 超塑性 , 微观组织

Microstructure of a Spray-formed Ultrahigh Carbon Steel After Superplastic Deformation

研究了喷射成形超高碳钢的超塑性及其变形前后的显微组织.变形前,喷射态超高碳钢的组织为典型珠光体组织,而变形后,珠光体中的条状碳化物逐渐发生碎化和球化,并弥散分布于晶界处,此外,在铁素体基体中以及碳化物颗粒周围出现了高密度位错亚结构,而基体铁素体晶粒也有所伸长.喷射成形超高碳钢超塑性微观机制是以晶界滑动为主,晶内变形以及位错蠕变起了协调作用.

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材料期刊网

喷射成形超高碳钢超塑性变形后的微观组织

Microstructure of a Spray-formed Ultrahigh Carbon Steel After Superplastic Deformation

参考文献