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| 低合金高强钢大热输入焊接热影响区组织性能 | |
| 引用本文： | 夏佃秀,尚成嘉,孙卫华,侯东华,陈晔. 低合金高强钢大热输入焊接热影响区组织性能[J]. 焊接学报, 2011, 32(4): 83-86 |
| 作者姓名： | 夏佃秀 尚成嘉 孙卫华 侯东华 陈晔 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京100083;济南钢铁有限公司技术中心,济南250101 2. 北京科技大学材料科学与工程学院,北京,100083 3. 济南钢铁有限公司技术中心,济南,250101 |
| 摘 要： | 利用MMS-200热力模拟试验机研究了610 MPa级低合金高强度钢不同热输入焊接热影响区粗晶区(coarse grain high affected zone,CGHAZ)的组织和性能.结果表明,随着热输入的增加,试验钢CGHAZ组织逐渐粗大,低温冲击吸收功下降,但在80～100kJ/cm的大热输入冲击下,热影响区仍... |
| 关 键 词： | 热模拟 热影响区粗晶区 氮化钛粒子 大热输入焊接 |
| 收稿时间： | 2009-12-01 |
Microstructure and properties of high heat input welding HAZ of high strengthen steel |
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| XIA Dianxiu,SHANG Chengji,SUN Weihu,HOU Donghua and Chen Ye. Microstructure and properties of high heat input welding HAZ of high strengthen steel[J]. Transactions of The China Welding Institution, 2011, 32(4): 83-86 | |
| Authors: | XIA Dianxiu SHANG Chengji SUN Weihu HOU Donghua Chen Ye |
| Affiliation: | School of Material Science and Engineering, Beijing Science and Technology University, Beijing 100083, China;Technology Center, Jinan Iron & Steel Company, Limited, Jinan 250101, China,School of Material Science and Engineering, Beijing Science and Technology University, Beijing 100083, China,Technology Center, Jinan Iron & Steel Company, Limited, Jinan 250101, China,School of Material Science and Engineering, Beijing Science and Technology University, Beijing 100083, China and Technology Center, Jinan Iron & Steel Company, Limited, Jinan 250101, China |
| Abstract: | The microstructure and mechanical properties of coarse grain heat-affected zone(CGHAZ) of 610 MPa high strengthen steel which were treated under series high weld heat input by MMS-200 thermal simulation machine were studied.The results show that the test steel has good ability to resist thermal shock of 80-100 kJ/cm welding heat input,even after 120 kJ/cm welding heat input,the low-temperature toughness of heat-affected zone still keeps high level.With the increasing of welding heat input,the microstructure of CGHAZ gradually becomes more coarse and the toughness gradually worse;there are many fine and dispersed second-phase particle of TiN in test steel,which can prevent growth of primitive austenite,promote phase transformation of ferrite as nucleus and make the steel to resist thermal shock of high welding heat input. |
| Keywords: | thermal simulation coarse grain heat-affected zone TiN particle high heat input welding |
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