赵勇桃,董俊慧,张韶慧,刘宗昌

• 1:内蒙古工业大学材料科学与工程学院
• 2:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

利用热膨胀法,通过Gleeble1500热模拟机测定了P92钢焊接连续冷却转变过程中的膨胀曲线。采用共聚焦显微镜,扫描电镜对不同冷却速度下的试样进行显微组织观察及分析;利用显微硬度计测量了不同冷速下的显微硬度。通过对P92钢连续冷却特性分析和比较得出P92钢的焊接连续冷却转变曲线(SH-CCT曲线)。结果表明,P92钢的焊接CCT曲线分为两个区域,在高温区的类珠光体转变区,在低温区的马氏体转变区。P92钢在0.01~0.1℃/s的冷速范围内获得类珠光体+马氏体+残留奥氏体的混合组织;当冷却速度大于等于0.5℃/s时,获得马氏体与残留奥氏体的混合组织。

关键词(KeyWords)： P92钢;显微组织;焊接;CCT

Abstract:

Keywords:

基金项目(Foundation): 内蒙古自治区高等院校科学研究项目(NJZY13137)

作者(Author): 赵勇桃,董俊慧,张韶慧,刘宗昌

DOI: 10.13289/j.issn.1009-6264.2015.04.014

参考文献(References)：

• [1]戴长清,田富强,轩福贞.超超临界锅炉管道用T92/P92钢蠕变性能[J].压力容器,2010,27(3):40-45.DAI Chang-qing,TIAN Fu-qiang,XUAN Fu-zhen.Creep properties of T92/P92 steel for boiler pipe of USC power plants[J].Pressure Vessel Technology,2010,27(3):40-45.
• [2]王学,潘乾刚,陈方玉,等.P92钢高温蠕变损伤分析[J].材料热处理学报,2010,31(2):65-69.WANG Xue,PAN Qian-gang,CHEN Fang-yu,et al.Analysia of creep damage at elevated temperature in a P92 steel[J].Transactions of Materials and Heat Treatment,2010,31(2):65-69.
• [3]乔亚霞,武英利,郭军.P92钢焊接接头持久强度及微观组织分析[J].焊接学报,2011(1):109-112.QIAO Ya-xia,WU Ying-li,GUO Jun.Stress-rupture and micro-structure analysis of P92 weld joint[J].Transactions of the China Welding Institution,2011(1):109-112.
• [4]SAAD A A,HYDE T H,SUN W,et al.Characterization of viscoplasticity behaviour of P91 and P92 power plant steels[J].International Journal of Pressure Vessels and Piping,2013,111-112:246-252.
• [5]ZHAO Lei,HONG Yang-jing,XU Lian-yong,et al.Numerical investigation of factors affecting creep damage accumulation in ASME P92 steel welded joint[J].Materials and Design,2012,34:566-575.
• [6]WANG Xue,PAN Qian-gang,REN Yao-yao,et al.Microstructure and type IV cracking behavior of HAZ in P92 steel weldment[J].Materials Science and Engineering A,2012,552:493-501.
• [7]Kannan R,Sankar V,Sandhya R,et al.Comparative evaluation of the low cycle fatigue behaviours of P91 and P92 steels[J].Procedia Engineering,2013,55:149-153.
• [8]张红军,周荣灿,唐丽英,等.P92钢650℃时效的组织性能研究[J].中国电机工程学报,2009(S1):174-177.ZHANG Hong-jun,ZHOU Rong-can,TANG Li-ying,et al.Study on micro-structure and mechanical properties of P92 steel aged at 650℃[J].Proceedings of the CSEE,2009(S1):174-177.
• [9]刘睿,邹勇,张忠文,等.超超临界机组用P92钢高温服役8000 h后显微组织与韧性[J].材料热处理学报,2014,35(9):116-120.LIU Rui,ZOU Yong,ZHANG Zhong-wen,et al.Microstructure and toughness of steel P92 used in ultra supercritical unit after 8000 h service at high temperature[J].Transactions of Materials and Heat Treatment,2014,35(9):116-120.
• [10]刘福广,李太江,梁军,等.高温时效对P92钢焊接接头显微组织和力学性能的影响[J].中国电机工程学报,2011(14):121-125.LIU Fu-guang,LI Tai-jiang,LIANG Jun,et al.Effect of thermal aging on micro-structure and mechanical properties of P92 steel weld Joints[J].Proceedings of the CSEE,2011(14):121-125.
• [11]YrostkováV',HomolováV,Pecha J,et al.Phase evolution in P92 and E911 weld metals during aging[J].Materials Science and Engineering A,2008,480(1/2):289-298.
• [12]GUO Xiao-feng,GONG Jian-ming,JIANGYong,et al.The influence of long-term aging on microstructures and static mechanical properties of P92 steel at room temperature[J].Materials Science&Engineering A,2013,564:199-205.
• [13]张忠文,李新梅,刘非凡,等.焊接方法对T92钢焊接接头韧性的影响[J].热加工工艺,2007(3):35-38.ZHANG Zhong-wen,LI Xin-mei,LIU Fei-fan,et al.Effect of welding methods on toughness of welding joint of T92 steel[J].Hot Working Technology,2007(3):35-38.
• [14]ZHANG Nai-qiang,XU Hong,LI Bao-rang,et al.Influence of the dissolved oxygen content on corrosion of the ferritic-martensitic steel P92 in supercritical water[J].Corrosion Science,2012,56:123-128.
• [15]YIN Kai-ju,QIU Shao-yu,TANG Rui,et al.Corrosion behavior of ferritic/martensitic steel P92 in supercritical water[J].The Journal of Supercritical Fluids,2009,50(3):235-239.
• [16]胡淑娥.600 MPa级耐火钢焊接热模拟研究[J].热加工工艺,2005(2):57-59.HU Shu-e.Study on welding thermal simulation of fire-resistant steel for 600 MPa grade[J].Hot Working Technology,2005(2):57-59.
• [17]刘宗昌,李文学,邵淑艳.工模具钢退火用C曲线的测定及其应用[J].金属热处理,2001,26(7):36-37.LIU Zong-chang,LI Wen-xue,SHAO Shu-yan.C curves of tool steels for annealing and their application[J].Heat Treatment of Metals,2001,26(7):36-37.
• [18]王艳杰,何长红,彭云,等.控轧控冷与热轧耐候钢焊接CCT曲线测定及热影响区的组织特征[J].焊接-生产应用,2007,110:45-48.WANG Yan-jie,HE Chang-hong,PENG Yun,et al.SH-CCT curves determination and HAZ micro-structure characteristics of controlled rolling and controlled cooling steel or hot rolled steel corrosion-resistant steel[J].Weld-Production Application,2007,110:45-48.
• [19]刘宗昌.材料组织转变原理[M].北京:冶金工业出版社,2006.
• [20]周世锋,王昱成,李向阳,等.ZG0Cr13Ni5Mo马氏体不锈钢模拟焊接HAZ组织与性能[J].焊接学报,2004,25(4):63-66.ZHOU Shi-feng,WANG Yu-cheng,LI Xiang-yang,et al.Simulation welding HAZ micro-structure and properties of ZG0Cr13Ni5Mo martensite stainless steel[J].Transactions of the China Welding Institution,2004,25(4):63-66.

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