不同冶金工艺深冲钢板的显微组织与力学性能对比
Comparison of Microstructure and Mechanical Properties of Deep Drawing Steel Sheet Prepared by Different Metallurgy Processes
摘 要
采用OM、SEM和TEM等方法,研究了循环法真空处理(RH)-钢包炉外精炼法(LF)双联钙处理和RH单联未进行钙处理两种冶金工艺对深冲(DDQ)级钢板的显微组织、力学性能和夹杂物的影响.结果表明:双联工艺冷轧退火板的抗拉强度、屈服强度低于单联工艺的,但伸长率高于后者;双联工艺会引起钢板的增碳,影响了钢板的塑性应变比r值;双联工艺钢板中夹杂物数量更少,而且尺寸也较小.
塑性应变比
夹杂物
冶金工艺
deep drawing steel sheet
plastic strain ratio
inclusion
bcetallurgy precess
Abstract
The effects of two metallurgy processes with Ruhrstahl/Heraeus(RH)-Ladle furnace(LF) duplex calcium treatment and RH without calcium treatment on microstructure,mechanical properties and inclusion of deep draving quality(DDQ) level cold-rolled sheets were studied by means of OM,SEM and TEM.The results show that the tensile strength and yield strength of the cold-rolled annealed sheet with RH-LF duplex calcium treatment were lower than those with RH without calcium treatment,but the elongation was higher than the later.The plastic strain ratio value of r was influenced by the carburization phenomenon caused during the process of RH-LF duplex calcium treatment.And the quantity of inclusions in the steel dealed with RH-LF duplex calcium treatment was less and the inclusion size was smaller.
中图分类号 TG142.1
所属栏目 试验研究
基金项目
收稿日期 2009/5/31
修改稿日期 2010/2/25
网络出版日期
作者单位点击查看
备注裴斐(1985-),男,辽宁朝阳人,硕士研究生.
引用该论文: PEI Fei,CHENG Xiao-jun,PENG Wei,XIAO Yu-de,XU Xiao-chang. Comparison of Microstructure and Mechanical Properties of Deep Drawing Steel Sheet Prepared by Different Metallurgy Processes[J]. Materials for mechancial engineering, 2010, 34(6): 37～42
裴斐,成小军,彭伟,肖于德,许晓嫦. 不同冶金工艺深冲钢板的显微组织与力学性能对比[J]. 机械工程材料, 2010, 34(6): 37～42
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【8】崔鹏高,张殿军,刘新华,等.低碳深冲钢连铸过程中的夹杂物[J].河南冶金,1996(2):51-52.
【9】张鹏.Nb+Ti-IF钢成形工艺及组织性能研究[D].重庆:重庆大学,2008.
【10】韩梅.薄板材料与冲压成形[J].汽车工艺与材料,1999(8):23-24.
【11】COSTA A,SILV A.Thermodynamic aspects of inclusion engineering in steels[J].Rare Metals,2006,25(5):412-419.
【12】霍向东,王元立,柳得橹,等.CSP低碳钢板的组织和性能[J].钢铁研究学报,2004,16(3):57-59.
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【15】SAMAJDAR I,VERLINDEN B,VAN H P.Texture changes through grain growth in Ti-bearing IF-steel investigated by orientation imaging microscopy and X-ray diffraction[J].ISIJ International,1997,37(10):1010-1016.
【16】尹红国,温德智,吴光亮,等.退火工艺对SPCC冷轧薄板组织及性能的影响[J].矿冶工程,2008(4):102-103.
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