[1]马立立,李雅可,郭锦龙,等.快速冷处理对高强度管线钢X120热影响区的微观组织和韧性的影响[J].焊管,2013,36(6):68-72.[doi:１００１－３９３８（２０１3）06-0068-05]
　Edited and Translated by MA Lili,LI Yake,GUO Jinlong,et al.Effect of fast cooling process on the microstructure and toughness of heat-affected zone in a high strength pipeline steel X120[J].,2013,36(6):68-72.[doi:１００１－３９３８（２０１3）06-0068-05]
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快速冷处理对高强度管线钢X120热影响区的微观组织和韧性的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
36
期数:
2013年第6期
页码:
68-72
栏目:
国外焊管
出版日期:
2013-06-28

文章信息/Info

Title:
Effect of fast cooling process on the microstructure and toughness of heat-affected zone in a high strength pipeline steel X120
文章编号:
１００１－３９３８（２０１3）06-0068-05
作者:
马立立; 李雅可; 郭锦龙; 王 涛; 钱 勇 编译
（渤海装备南京巨龙钢管有限公司，南京 210061）
Author(s):
Edited and Translated by MA Lili;  LI Yake;  GUO Jinlong;  WANG Tao;  QIAN Yong
（Bohai Equipment Nanjing Julong Steel Pipe Co.， Ltd.， Nanjing 210061， China）
关键词:
管线钢; 快速冷却; 热影响区; 微观组织; 冲击韧性
Keywords:
pipeline steel;  fast cooling process;  heat-affected zone;  microstructure;  impact toughness
分类号:
TG142.1
DOI:
１００１－３９３８（２０１3）06-0068-05
文献标志码:
A
摘要:
焊接过程中通过快速冷却减少Ac3温度以上的高温保持时间和从800 ℃降到500 ℃的冷却时间，从而改善焊接热影响区的韧性。并通过光学显微镜和扫描电子观察不同热循环作用的热影响区的微观组织发现，缩短高温保持时间可使热影响区变窄，熔合线奥氏体晶粒变细和热影响区晶粒变粗大；然而，缩短从800 ℃到500 ℃的冷却时间可使热影响区贝氏体铁素体晶粒细化。熔合线M/A组分在数量和尺寸上有所减小，并且大部分转变成长条状。试验结果表明，快速冷却处理在改善X120管线钢热影响区韧性方面起着重要的作用。
Abstract:
A process for improving the heat-affected zone toughness by fast cooling during welding was developed. The holding time at high temperature above Ac3 and the cooling time from 800 ℃ to 500 ℃ were decreased when welding thermal cycle was experienced by fast cooling process. The microstructures in the heat-affected zone with varied thermal cycles were examined by optical and scanning electron microscopes. The shorten holding time led to thinner heat-affected zone width and finer austenite grains in the fusion line and coarse-grained heat-affected zone; while the decreased cooling time from 800 ℃ to 500 ℃ resulted in finer bainitic ferrite in the heat-affected zone. Martensite-austenite constituents in the fusion line were reduced in amount and size and predominantly changed into film-like in shape. Experimental results indicated that the fast cooling process played an important role in improving the heat-affected zone toughness of pipeline steel X120.

参考文献/References:

［1］ KNEISSL A C， GARCIA C I， DEARDO A J.In HSLA Steels， Processing， Properties and Applications［M］.Warrendale：The Minerals， Metals & Materials Society，1992：99-105.
［2］ GLADMAN T.The Physical Metallurgy of Microalloyed Steels［M］.London： The Institute of Materials，1997.
［3］ SHIKANAI N，MITAO S，ENDO S.Recent Development in microstructural Control Technologies Through the Thermo-mechanical Control Process（TMCP） with JFE Steel’s High-performance Plates， JFE Technical Report11［M］.Tokyo： JFE Steel Corporation，2008.
［4］ SONG W H， SEO D H，YOO J Y.Mechanical Properties and Microstructure of X100 Grade Pipe Welds［C］//Conference on Pipeline Technology.Ostend：［s.n.］，2009：24-30.
［5］ SHOME M，GUPTA O P，MOHANTY O N.A Modified Analytical Approach for Modeling Grain Growth in the Coarse Grain HAZ of HSLA Steels［J］. Scripta Mater， 2004（50）：1007-1010.
［6］ HULKA K.Modern Processing Facilities Favour the Application of Microalloyed Steels［C］//Proceeding International Conference on clean steel.Balatonszeplak：［s.n.］，1992：4-8.
［7］ ASHBY M F，EASTERLING K E.A First Report on Diagrams for Grain Growth in Welds［J］. Acta Metall，198230（11）：1969-1978.
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备注/Memo

备注/Memo:
译者简介：马立立（1984—），女，助理工程师，主要从事直缝埋弧焊钢管产品质量管理工作。
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