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| 焊接热输入对X100管线钢粗晶区组织及性能的影响 | |
| 引用本文： | 张骁勇,高惠临,庄传晶,吉玲康.焊接热输入对X100管线钢粗晶区组织及性能的影响[J].焊接学报,2010,31(3):29-32. |
| 作者姓名： | 张骁勇 高惠临 庄传晶 吉玲康 |
| 作者单位： | 1. 西安建筑科技大学材料科学与工程学院,西安710048;西安石油大学材料科学与工程学院,西安710065 2. 西安石油大学材料科学与工程学院,西安,710065 3. 中国石油天然气集团公司管材研究所,西安,710065 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 采用热模拟技术、显微分析方法和力学性能测试等手段,对X100管线钢在不同焊接热输入下粗晶区的组织及性能的变化规律进行了研究.结果表明,随着焊接热输入的增加,X100管线钢的强韧性降低.当热输入为10kJ/cm左右时,焊接粗晶热影响区的显微组织以贝氏体铁素体和粒状贝氏体为主,这种组织赋予材料以最佳的强韧性水平;当热输入为20kJ/cm左右时,焊接粗晶热影响区的显微组织以粒状贝氏体和准多边形铁素体为主,材料有较好的强韧配合;而当热输入大于30kJ/cm时,由于多边形铁素体增多,材料的强韧性降低.因此可将10～20kJ/cm作为X100管线钢的推荐热输入. |
| 关 键 词： | X100管线钢 焊接热输入 组织 性能 |
| 收稿时间： | 2009/4/9 0:00:00 |
Influence of welding heat input on microstructure and properties of coarse grain heat-affected zone in X100 pipeline steel |
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| ZHANG Xiaoyong,GAO Huilin,ZHUANG Chuanjing and JI Lingkang.Influence of welding heat input on microstructure and properties of coarse grain heat-affected zone in X100 pipeline steel[J].Transactions of The China Welding Institution,2010,31(3):29-32. | |
| Authors: | ZHANG Xiaoyong GAO Huilin ZHUANG Chuanjing and JI Lingkang |
| Affiliation: | School of Materials Science and Engineering, Xi''an University of Architecture and Technology, Xi''an 710055, China;School of Materials Science and Engineering, Xi''an Shiyou University, Xi''an 710065, China,School of Materials Science and Engineering, Xi''an Shiyou University, Xi''an 710065, China,Tubular Goods Research Center of China National Petroleum Corporation, Xi''an 710065, China and Tubular Goods Research Center of China National Petroleum Corporation, Xi''an 710065, China |
| Abstract: | The influence of welding heat input on the microstructure characterization and properties of coarse grain heat-affected zone(CGHAZ) in a X100 pipeline steel were investigated by means of thermal simulation technique, microscopic analysis method and mechanical property testing. The results showed that the strength and toughness of XI00 pipeline steel decreased with the welding heat input increasing. The microstructure of CGHAZ was mainly made up of bainitic ferrit and granular bainitic which could bring excellent strength and toughness when welding heat was about 10 kJ/cm. The quasi-polygonal ferrite and granular bainitic were formed with welding heat input about 20 kJ/cm, which could get fine strength-toughness. When the welding heat input was higher than 30 kJ/cm, the strength and toughness decreased because of the increasing of polygonal ferrite. Therefore, welding heat input at range of 10-20 kJ/cm was recommended in the welding process of X100 pipeline steels. |
| Keywords: | X100 pipeline steel welding heat input microstructure properties |
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