定向凝固NiAl-15Cr合金的高温拉伸性能和韧脆转变条件
High Temperature Tensile Properties and Brittle-to-Ductile Transition of Directionally Solidified NiAl-15Cr Alloy
摘 要
研究了定向凝固NiAl-15Cr合金的显微组织、高温拉伸性能和韧脆转变条件.结果表明:该合金显微组织为枝晶状,枝晶干为β-NiAl相、枝晶间为γ相和过渡层为γ′相;合金具有很好的高温塑性和高温强度,并在1 323 K时表现出类超塑性行为;同时它具有明显的韧脆转变温度,当应变速率为1.11×10-4 s-1时,韧脆转变温度为873 K,应变速率提高两个数量级后,韧脆转变温度升高约150 K.
NiAl
金属间化合物
韧脆转变
directional solidification
NiAl
intermetallics
brittle-to-ductile transition
Abstract
The microstructure,high temperature tensile properties and brittle-to-ductile transition condition of directionally solidified NiAl-15Cr alloy had been investigated.The results show that the microstructure was dendritic shape.The dendrite arm was β-NiAl phase,γ phase was in interdendritic region and transient layer was γ′ phase.The alloy showed good plasticity and strength at high temperatures and superplasticity-like deformation behavior at 1 323 K.And it had obvious brittle-to-ductile transition temperature(BDTT),which was 873 K as the strain rate was 1.11×10-4 s-1.When the initial strain rate increased by two order of magnitude,the BDTT increased by approximate 150 K.
中图分类号 TG146
所属栏目 材料性能及其应用
基金项目
收稿日期 2009/4/13
修改稿日期 2010/3/12
网络出版日期
作者单位点击查看
备注肖思文(1968-),女,湖南娄底人,高级工程师,硕士.
引用该论文: XIAO Si-wen. High Temperature Tensile Properties and Brittle-to-Ductile Transition of Directionally Solidified NiAl-15Cr Alloy[J]. Materials for mechancial engineering, 2010, 34(5): 60～63
肖思文. 定向凝固NiAl-15Cr合金的高温拉伸性能和韧脆转变条件[J]. 机械工程材料, 2010, 34(5): 60～63
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参考文献
【1】GUHA S,MUNROE P R,BAKER I.Room temperature deformation behavior of multiphase Ni-20Al at.%-30Fe at.% and its constitute phases[J].Mater Sci Eng A,1991,131:27-35.
【2】DAROLIA R,LAHRMAN D,FIELD R.The effect of Fe,Ga and Mo on the room temperature tensile ductility of NiAl[J].Scripta Metall Mater,1992,26:1007-1016.
【3】JOHNSON D R,CHEN X F,OLIVER B F,et al.Processing and mechanical properties of in-situ composites from NiAl-Cr and NiAl-Cr(Mo)eutectic systems[J].Intermetallics,1995(3):99-107.
【4】NIEH T G,WADSWORTH J.Microstructural characteristics and deformation properties in superplastic intermetallics[J].Mater Sci Eng A,1997,239/240:88-101.
【5】CUI C Y,CHEN Y X,GUO J T,et al.Preliminary investigation of directionally solidified NiAl-28Cr-5.5Mo-0.5Hf[J].Mater Letters,2000,43:203-212.
【6】郭建亭,崔传勇,李谷松,等.定向凝固NiAl基合金的微观组织和高温力学性能[J].金属学报,2000,36(11):1139-1145.
【7】GUO J T,CUI C Y,CHEN Y X,et al.Microstructure,interface and mechanical properties of DSNiAl-Cr(Mo,Hf)composite[J].Intermetallics,2001(9):28-35.
【8】NOEBE R D,BOWMAN R R,NATHAL M V.Physics and mechanical properties of the B2 compound NiAl[J].International Materials Reviews,1993,38:193-202.
【9】ZHANG G Y,GUO J T,YE H Q.BDT and creep behaviors of NiAl-25 at%Cr alloy at various temperatures[J].Materials Sciences Forum,2005,475/479:2623-2626.
【10】DAROLIA R,LAHRMAN D,FIELD R D.The effect of iron,gallium and molybdenum on the room temperature tensile ductility of NiAl[J].Scr Metall Mater,1992,26:1007-1012.
【11】YAMAGUCHI M,INUI H,ITO K.High-temperature structural intermetallics[J].Acta Materials,2000,48(1):307-322.
【12】NOEBE R D,MISRA A,GIBAL A R.Plastic flow and fracture of B2 NiAl-based intermetallic alloys containing a ductile second phase[J].ISIJ International,1991,31(10):1172-1185.
【13】郭建亭,张光业,杜兴蒿.定向凝固NiAl合金超塑性行为的研究[J].中国有色金属学报,2004,14(4):521-526.
【2】DAROLIA R,LAHRMAN D,FIELD R.The effect of Fe,Ga and Mo on the room temperature tensile ductility of NiAl[J].Scripta Metall Mater,1992,26:1007-1016.
【3】JOHNSON D R,CHEN X F,OLIVER B F,et al.Processing and mechanical properties of in-situ composites from NiAl-Cr and NiAl-Cr(Mo)eutectic systems[J].Intermetallics,1995(3):99-107.
【4】NIEH T G,WADSWORTH J.Microstructural characteristics and deformation properties in superplastic intermetallics[J].Mater Sci Eng A,1997,239/240:88-101.
【5】CUI C Y,CHEN Y X,GUO J T,et al.Preliminary investigation of directionally solidified NiAl-28Cr-5.5Mo-0.5Hf[J].Mater Letters,2000,43:203-212.
【6】郭建亭,崔传勇,李谷松,等.定向凝固NiAl基合金的微观组织和高温力学性能[J].金属学报,2000,36(11):1139-1145.
【7】GUO J T,CUI C Y,CHEN Y X,et al.Microstructure,interface and mechanical properties of DSNiAl-Cr(Mo,Hf)composite[J].Intermetallics,2001(9):28-35.
【8】NOEBE R D,BOWMAN R R,NATHAL M V.Physics and mechanical properties of the B2 compound NiAl[J].International Materials Reviews,1993,38:193-202.
【9】ZHANG G Y,GUO J T,YE H Q.BDT and creep behaviors of NiAl-25 at%Cr alloy at various temperatures[J].Materials Sciences Forum,2005,475/479:2623-2626.
【10】DAROLIA R,LAHRMAN D,FIELD R D.The effect of iron,gallium and molybdenum on the room temperature tensile ductility of NiAl[J].Scr Metall Mater,1992,26:1007-1012.
【11】YAMAGUCHI M,INUI H,ITO K.High-temperature structural intermetallics[J].Acta Materials,2000,48(1):307-322.
【12】NOEBE R D,MISRA A,GIBAL A R.Plastic flow and fracture of B2 NiAl-based intermetallic alloys containing a ductile second phase[J].ISIJ International,1991,31(10):1172-1185.
【13】郭建亭,张光业,杜兴蒿.定向凝固NiAl合金超塑性行为的研究[J].中国有色金属学报,2004,14(4):521-526.
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