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| B级钢/Q450NQR1钢焊接接头组织与力学性能 | |
| 引用本文： | 胡飞,谭文一,张锋刚. B级钢/Q450NQR1钢焊接接头组织与力学性能[J]. 热加工工艺, 2010, 39(1) |
| 作者姓名： | 胡飞 谭文一 张锋刚 |
| 作者单位： | 1. 大连交通大学,材料科学与工程学院,辽宁,大连,116028 2. 大连理工大学,材料学院,辽宁,大连,116026 |
| 摘 要： | 通过拉伸、弯曲、冲击、硬度试验以及金相分析等方法,研究了B级钢/Q450NQR1钢焊接接头组织与力学性能。结果表明:接头抗拉强度优于母材B级钢,弯曲性能良好;B级钢侧HAZ冲击值较低;焊缝组织为先共析铁素体+针状铁素体,B级钢侧HAZ为铁素体+网状珠光体,晶粒粗大。 |
| 关 键 词： | B级钢 MAG焊 焊接接头组织 力学性能 |
Microstructure and Mechanical Properties of Welded Joints of B-grade Steel/Q450NQR1 Steel |
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| HU Fei,TAN Wenyi,ZHANG Fenggang. Microstructure and Mechanical Properties of Welded Joints of B-grade Steel/Q450NQR1 Steel[J]. Hot Working Technology, 2010, 39(1) | |
| Authors: | HU Fei TAN Wenyi ZHANG Fenggang |
| Affiliation: | HU Fei1,TAN Wenyi1,ZHANG Fenggang2(1.School of Material Science , Engineering,Dalian Jiaotong University,Dalian 116028,China,2.School of Material Science , Engineering,Dalian University of Technology,Dalian 116024,China) |
| Abstract: | Microstructure and mechanical properties for the welded joints of B-grade steel and Q450NQR1 steel were researched by tensile,flexural,impact,hardness tests and metallographic.The results show that joint tensile strength of the two steel is better than that of B-grade steel materials,and the bending properties of the joint is good;the impact value near to B grade steel HAZ is lower.The microstructure is proeutectoid ferrite + acicular ferrite in weld,and near the HAZ of B grade steel side is ferrite + meshe... |
| Keywords: | B-grads steel MAG welding microstructures of welded joint mechanical properties |
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