超低碳冷轧薄板单向拉伸过程变形机理

基金项目:

国家“九五”攻关课题(No.95-527-01-04-01)

详细信息

Deformation Mechanism in Simple Tension of Cold-Rolled Extra-Low-Carbon Light Gauge Sheet

摘要: 通过对超低碳IF钢冷轧薄钢板拉伸过程中不同变形程度的测试与扫描电镜的观察,研究了其表面形貌及组织的变化规律.探讨了超低碳钢韧性断裂中内部孔洞形成机理,并指出超低碳钢中的微孔洞不是主要由夹杂物或第二相粒子产生,而是因为位错的滑移、集聚,在原有损伤处形成.
- 冷轧薄板 /
- 表面形貌 /
- 组织的变化 /
- 孔洞形成机理
Abstract: By testing the cold-rolled extra-low-carbon light gauge sheet samples under different deformation stages and observing them by SEM, their surface pattern and the rules of the transmutation of microstructure has been researched, and the mechanism of the formation of interior holes in gliding fracture was discussed. The result pointed out that it is dislocations' slipping and gathering in original impaired locations but not inclusion and second-phase pericles that is mainly responsible for formation of micro-holes in extra-low-carbon steel.
- tension test /
- surface pattern /
- transmutation of microstructure /
- mechanism of the formation of in-terior holes