田耘,李帅华,杨峥,柳光祖,雷喆

• 1:钢铁研究总院

摘要(Abstract)：

研究了具有粗、细两种不同晶粒组织状态的MGH956合金板材室温～1200℃拉伸及1100℃持久性能。采用扫描电镜和金相显微镜对拉伸和持久试样的断口形貌及纵剖面组织进行了检验,对比分析了两种板材不同温度下的强化因素、及变形和断裂模式。结果表明:正是由于强化因素、及变形和断裂模式上的不同,使得细晶板材的拉伸强度在低温高于粗晶板材,在高温则低于粗晶板材,以及细晶板材的持久强度大大低于粗晶板材;但两种板材从室温～1200℃的拉伸伸长率并无明显差异。

关键词(KeyWords)： MGH956合金;板材;拉伸;持久

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 田耘,李帅华,杨峥,柳光祖,雷喆

DOI: 10.13289/j.issn.1009-6264.2013.s1.024

参考文献(References)：

• [1]Whittenberger J D,Tensile and creep properties of the experimental oxide-dispersion strengthened iron-base sheet alloy MA-956E at 1365K[J].Metallurgical Transactions A,1978,9(6):101-110.
• [2]Wiegert W H,Henricks R J,Tensile and creep-rupture behavior of two advanced oxide-dispersion strengthened sheet alloys[C]//Tien J K,Wlodek ST,Superalloys,Seven Springs International Symposium Committee,Schenectady,New York,1980:575-584.
• [3]Hughes T,Hirst T,Some aspects of the high-temperature embrittlement of Incoloy MA956[C]//Benjamin J S,Benn R C,Frontiers of HighTemperature Materials II,London,IncoMap,1983:149-162.
• [4]Davidson J M,Ductile-brittle transation behavior of Incoloy MA956[C]//Benjamin J S,Benn R C,Frontiers of High Temperature Materials II,London,IncoMap,1983:163-189.
• [5]田耘,李帅华,杨峥,等.细化晶粒对改善MGH956合金板材低温脆性的影响[J]材料热处理学报,2012,33(4):100-104.TIAN Yun,LI Shuai-hua,YANG Zheng,et al.Effects of grain refining on low temperature brittleness of alloy MGH956 sheet[J].Transaction ofMaterials and Heat Treatment,2012,33(4):100-104.
• [6]Bartsch M,Wasilkowska A,Filemonowicz C A,et al.Dislocation dynamics in the oxide dispersion strengthened alloy Incoloy MA956[J].MaterialsScience and Engineering A,1999,272:152-162.
• [7]Dubiel B,Osuch W,Wrobel M,et al.Correlation of the microstructure and the tensile deformation of Incoloy MA956[J].Materials ProcessingTechnicoly,1995,53:121-130.
• [8]Dubiel B,Wrobel M,Ennis P J,et al.Microstructure of Incoloy MA956 after low and high temperature deformation[J].Scripta Materialia,1997,37(8):1215-1220.
• [9]Filemonowicz C A,Wrobel M,Dubiel B,et al.Transmission electron microscopy study of dislocation-dispersoid interaction in deformed Incoloy MA956[J].Scripta Metallurgica et Materialia,1995,32(3):331-335.
• [10]Filemonowicz C A,Dubiel B,Mechanically alloyed ferritic oxide dispersion strengthened alloys:Structure and properties[J].Materials ProcessingTechnicoly,1997,64:53-64.
• [11]Weisse M,Blum W,Granacher J,et al.Influence of grain,dislocation and phase structure on the long-term deformation behaviour of Fe-base ODSalloys in the creep regime[C]//Kneringger G,Proc.15th Int Plansee Seminar,Austria,Plansee AG,2001:530-546.
• [12]Bothe K,Kussmaul K,Maile K.Influence of microstructural parameters on the deformation and failure behaviour of the ODS alloy PM 2000 undercreep and creep-fatigue loading[C]//Kneringger G,Proc.15th Int.Plansee Seminar,Austria,Plansee AG,2001:547-559.

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