汽车车轮用高扩孔率热轧复相钢带的研制OA
Development of high hole-expanding ratio hot-rolled complex phase steel for automotive wheels
设计了一种微合金化的汽车车轮用高扩孔率热轧复相钢,并对其进行了工业试制.采用金相检验、力学性能测试等方法研究了高扩孔率热轧复相钢的显微组织及力学性能.结果表明:试制产品的显微组织主要由贝氏体、铁素体构成,还分布有少量的马氏体、残余奥氏体以及弥散析出的第二相粒子,产品的屈服强度、抗拉强度、断后伸长率分别超过了520,610 MPa和24%,屈强比为0.85～0.87,扩孔率达到83%以上,沿板宽方向的扩孔率在10%以内波动;增加Si元素含量能明显改…查看全部>>
A micro-alloyed hot-rolled complex phase steel with high porosity for automobile wheels was designed and industrially trial-produced.The microstructure and mechanical properties of hot rolled multiphase steel with high hole expansion rate were studied by means of metallographic examination and mechanical properties test.The results show that the microstructure of the trial product was mainly composed of bainite and ferrite,and a small amount of martensite,re…查看全部>>
左鹏;管传华;邬晓燕;许鹤君
宁波钢铁有限公司 技术中心,宁波 315807宁波钢铁有限公司 技术中心,宁波 315807宁波钢铁有限公司 技术中心,宁波 315807上海材料研究所有限公司检测中心,上海 200437
金属材料
热轧复相钢带高扩孔率汽车车轮显微组织力学性能扩孔率疲劳寿命
hot-rolled complex phase steel striphigh hole expansion ratecar wheelmicrostructuremechanical propertyreaming ratefatigue life
《理化检验-物理分册》 2024 (8)
10-15,6
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