| 1 000 MPa级双相钢薄板极限成形性能 |
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| 引用本文： | 史刚,王武荣,羊军,胡伟,但文蛟.1 000 MPa级双相钢薄板极限成形性能[J].上海交通大学学报,2011,45(11):1653-1656. |
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| 作者姓名： | 史刚 王武荣 羊军 胡伟 但文蛟 |
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| 作者单位： | （1.上海汽车集团股份有限公司技术中心， 上海 201804；2.上海大学 材料科学与工程学院，上海200072；3.上海交通大学 船舶海洋与建筑工程学院， 上海 200240） |
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| 基金项目： | 国家自然科学基金资助项目(51005144); 上海汽车工业科技发展基金资助项目(0910) |
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| 摘 要： | 基于圆筒拉深试验，获得了1 000 MPa级先进高强度钢拉深时破裂的临界点和极限拉延比(LDR).研究了Hill、Barlat和BBC 3种不同屈服准则的数值仿真效果.结果表明：1 000 MPa级双相钢LDR值为2.07，且Barlat屈服准则模拟结果与实际试验相符.对断口进行扫锚电镜（SEM）观测，发现1 000 MPa级双相钢有别于传统板材，其拉深断裂模式为沿板材厚向45°的韧性切向断裂，无明显颈缩现象.
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| 关 键 词： | 双相钢 成形性能 剪切型断裂 拉深 |
| 收稿时间： | 2010-12-29 |
Study on Limit Formability of 1000 MPa Dual Phase Steel |
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| SHI Gang,WANG Wu-rong,YANG Jun,HU Wei,DAN Wen-jiao.Study on Limit Formability of 1000 MPa Dual Phase Steel[J].Journal of Shanghai Jiaotong University,2011,45(11):1653-1656. |
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| Authors: | SHI Gang WANG Wu-rong YANG Jun HU Wei DAN Wen-jiao |
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| Institution: | (1.Technical Center, SAIC Motor, Shanghai 2018041, China; 2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China; 3. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China） |
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| Abstract: | Through the cup drawing test, the onset crack and limiting drawing ratio (LDR) of 1 000 MPa dual phase (DP) steel were identified. Three yielding models: Hill, Barlat and BBC were compared in the numerical simulation. The results show that LDR of 1 000 MPa DP steel is 2.07. And Barlat yield criterion is suitable for actual test. Unlike traditional sheet materials whose crack has obvious necking, the crack mode of 1 000 MPa DP is a tensile shear fracture and cracks are on alternating 45° planes, through thickness. |
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| Keywords: | dual phase steel formability tensile shear fracture deep drawing |
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