镍基合金740H时效过程中的显微组织与相析出行为（英文）
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摘要
借助扫描电镜、透射电镜和力学性能分析研究镍基合金740H在750°C时效10000 h过程中的显微组织和相析出行为及其对室温硬度和冲击性能的影响。供货态镍基合金740H的硬度低至HB 168,最高冲击吸收能量为96 J。经800°C标准热处理16 h后,晶内析出细小γ'颗粒,晶界析出少量碳化物,硬度提高到HB 304,冲击吸收能量降至15 J。当合金在750°C时效300 h时,硬度达到最大值HB 331。随着时效时间由300 h延长至10000 h,硬度和冲击吸收能量均降低,晶界碳化物M23C6数量明显增多,γ'相尺寸粗化。
The microstructure and phase precipitate behavior and their effects on the room temperature hardness and impact toughness of Inconel 740 H aged at 750 °C for 10000 h were investigated by SEM, TEM and mechanical analysis. The as-received alloy shows a low hardness value of HB 168 and a highest toughness value of 96 J. After an aging treatment at 800 °C for 16 h and cooled in air(standard heat-treated condition), fine γ′ phase particles precipitate within the grains and small carbide particles are located at the grain boundaries. The hardness increases to HB 304 and the impact toughness decreases to 15 J after standard heat treatment. A maximum hardness value of HB 331 is achieved for the alloy aged at 750 °C for 300 h. With increasing the aging time from 300 to 10000 h, a decrease of the hardness and toughness is observed along with an enhanced quantity of M23C6 particles and the coarsening of γ′ phase.
The microstructure and phase precipitate behavior and their effects on the room temperature hardness and impact toughness of Inconel 740 H aged at 750 °C for 10000 h were investigated by SEM, TEM and mechanical analysis. The as-received alloy shows a low hardness value of HB 168 and a highest toughness value of 96 J. After an aging treatment at 800 °C for 16 h and cooled in air(standard heat-treated condition), fine γ′ phase particles precipitate within the grains and small carbide particles are located at the grain boundaries. The hardness increases to HB 304 and the impact toughness decreases to 15 J after standard heat treatment. A maximum hardness value of HB 331 is achieved for the alloy aged at 750 °C for 300 h. With increasing the aging time from 300 to 10000 h, a decrease of the hardness and toughness is observed along with an enhanced quantity of M23C6 particles and the coarsening of γ′ phase.
引文
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[17]EVANS N D,MAZIASZ P J,SWINDEMAN R W,SMITH G D.Microstructure and phase stability in INCONEL alloy 740 during creep[J].Scripta Materialia,2004,51(6):503-507.
[18]ZHAO S Q,JIANG Y,DONG J X,XIE X S.Experimental investigation and thermodynamic calculation on phase precipitation of INCONEL 740[J].Acta Metallurgica Sinica(Engl Lett),2006,19(6):425-431.
[19]SHINGLEDECKER J P,EVANS N D,PHARR G M.Influences of composition and grain size on creep-rupture behavior of Inconel alloy 740[J].Materials Science and Engineering A,2013,578:277-286.
[20]BECHETTI D H,DUPONT J N,DEBARBADILLO J J,BAKER BA.Homogenization and dissolution kinetics of fusion welds in INCONEL alloy 740H[J].Metallurgical and Materials Transaction A,2014,45:3051-3063.
[21]BECHETTI D H,DUPONT J N,DEBARBADILLO J J D,BAKERB A,WATANABE M.Microstructural evolution of INCONEL alloy740H fusion welds during creep[J].Metallurgical and Materials Transaction A,2014,46:1-17.
[22]WANG Jue,DONG Jian-xin,ZHANG Mai-cang,XIE Xi-shan.Hot working characteristics of nickel-base superalloy 740H during compression[J].Materials Science and Engineering A,2013,566:61-70.
[23]CHONG Yan,LIU Zheng-dong,GODFREY Andy,LIU Wei,WENGYu-qing.Microstructure evolution and mechanical properties of Inconel 740H during aging at 750°C[J].Materials Science and Engineering A,2014,589:153-164.
[24]XIE Xi-shan,ZHAO Shuang-qun,DONG Jian-xin,ZHANGMai-cang.Structural stability and improvement of Inconel alloy 740for ultra supercritical power plants[J].Journal of Chinese Society of Power Engineering,2011,31(8):638-641.(in Chinese)
[25]GUO Yan,ZHOU Rong-can,ZHANG Hong-jun,ZHANG Zhou-bo,HOU Shu-fang,WANG Bo-han.Microstructure and precipitates of alloy 740H[J].Proceedings of the CSEE,2015,35(17):4439-4444.
[26]YU Zhu-huan,LIU Lin,ZHANG Jun.Effect of carbon addition on carbide morphology of single crystal Ni-based superalloy[J].Transactions of Nonferrous Metals Society of China,2014,24(2):339-345.
[2]GUO Yan,JIA Jian-min,HOU Shu-fang,TANG Li-ying,LIN Lin.Steam oxidation behavior of domestic TP347H FG steel[J].Corrosion Science and Protection Technology,2011,23(6):505-509.
[3]CHI Cheng-yu,DONG Jian-xin,LIU Wen-qing,XIE Xi-shan.3DAPinvestigation of precipitation behavior of Cu-rich phase in super304H heat resistant steel[J].Acta Metallurgica Sinica,2010,46(9):1141-1146.(in Chinese)
[4]GUAN S,GUI C Y.A newly developed wrought Ni-Fe-Cr based superalloy for advanced ultra-supercritical power plant applications beyond 700°C[J].Acta Metallurgica Sinica,2015,28(9):1083-1088.
[5]R?STER J,G?TTING M,GENOVESE D D,B?TTGER B,KOPPR.Wrought Ni-base superalloys for steam turbine applications beyond 700°C[J].Advanced Engineering Materials,2003,5(7):469-483.
[6]SAUDERS J,MONTERIRO M,RIZZO F.The oxidation behavior of metals and alloys at high temperatures in atmospheres containing water vapor:A review[J].Progress in Materials Science,2008,53(5):775-837.
[7]LIU Li-rong,JIN Tao,LIU Jin-lai,SUN Xiao-feng,HU Zhuang-qi.Effect of ruthenium onγ′precipitation behavior and evolution in single crystal superalloys[J].Transactions of Nonferrous Metals Society of China,2013,23(1):14-22.
[8]JAHANGIRI M R,ARABI H,BOUTORABI S M A.Comparison of microstructural stability of IN939 superalloy with two different manufacturing routes during long-time aging[J].Transactions of Nonferrous Metals Society of China,2014,24(6):1717-1729.
[9]GARIBOLDI E,CABIBBO M,SPIGARELLI S.Investigation on precipitation phenomena of Ni-22Cr-12Co-9Mo alloy aged and crept at high temperature[J].International Journal of Pressure Vessels and Piping,2008,85(1-2):63-71.
[10]RAHMAN S,PRIYADARSHAN G,RAJA K S,NESBITT C,MISRA M.Investigation of the secondary phases of alloy 617 by scanning Kelvin probe force microscope[J].Materials Letter,2008,62(15):2263-2266.
[11]GUO Yan,WANG Bo-han,HOU Shu-fang.Aging precipitation behavior and mechanical properties of Inconel 617 superalloy[J].Acta Metallurgica Sinica(Engl Lett),2013,26(3):307-312.
[12]WU Q,SONG H,SWINDERMAN R W,SHINGLEDECKER J P,VASUDEVAN V K.Microstructure of long-term aged IN617 Ni-base superalloy[J].Metallurgical and Materials Transactions A,2008,39(11):2569-2585.
[13]TYTKO D,CHOIA P P,KLOWER J,KOSTKA A,INDEN G.Microstructural evolution of a Ni-based superalloy(617B)at 700°Cstudied by electron microscopy and atom probe tomography[J].Acta Materialia,2012,60(4):1731-1740.
[14]GUO Yan,ZHANG Zhou-bo,ZHOU Rong-can,HOU Shu-fang,WANG Bo-han.Microstructure and mechanical properties of alloy617B[J].Transactions of Nonferrous Metals Society of China,2015,25(4):1106-1113.
[15]ZHAO S Q,XIE X S,SMITH G D,PATEL S J.Research and improvement on structure stability and corrosion resistance of nickel-base superalloy INCONEL alloy 740[J].Materials and Design,2006,27(10):1120-1127.
[16]ZHAO S Q,XIE X S,SMITH G D,PATEL S J.The corrosion of INCONEL alloy 740 in simulated environments for pulverized coal-fired boiler[J].Materials Chemistry and Physics,2005,90(2):275-281.
[17]EVANS N D,MAZIASZ P J,SWINDEMAN R W,SMITH G D.Microstructure and phase stability in INCONEL alloy 740 during creep[J].Scripta Materialia,2004,51(6):503-507.
[18]ZHAO S Q,JIANG Y,DONG J X,XIE X S.Experimental investigation and thermodynamic calculation on phase precipitation of INCONEL 740[J].Acta Metallurgica Sinica(Engl Lett),2006,19(6):425-431.
[19]SHINGLEDECKER J P,EVANS N D,PHARR G M.Influences of composition and grain size on creep-rupture behavior of Inconel alloy 740[J].Materials Science and Engineering A,2013,578:277-286.
[20]BECHETTI D H,DUPONT J N,DEBARBADILLO J J,BAKER BA.Homogenization and dissolution kinetics of fusion welds in INCONEL alloy 740H[J].Metallurgical and Materials Transaction A,2014,45:3051-3063.
[21]BECHETTI D H,DUPONT J N,DEBARBADILLO J J D,BAKERB A,WATANABE M.Microstructural evolution of INCONEL alloy740H fusion welds during creep[J].Metallurgical and Materials Transaction A,2014,46:1-17.
[22]WANG Jue,DONG Jian-xin,ZHANG Mai-cang,XIE Xi-shan.Hot working characteristics of nickel-base superalloy 740H during compression[J].Materials Science and Engineering A,2013,566:61-70.
[23]CHONG Yan,LIU Zheng-dong,GODFREY Andy,LIU Wei,WENGYu-qing.Microstructure evolution and mechanical properties of Inconel 740H during aging at 750°C[J].Materials Science and Engineering A,2014,589:153-164.
[24]XIE Xi-shan,ZHAO Shuang-qun,DONG Jian-xin,ZHANGMai-cang.Structural stability and improvement of Inconel alloy 740for ultra supercritical power plants[J].Journal of Chinese Society of Power Engineering,2011,31(8):638-641.(in Chinese)
[25]GUO Yan,ZHOU Rong-can,ZHANG Hong-jun,ZHANG Zhou-bo,HOU Shu-fang,WANG Bo-han.Microstructure and precipitates of alloy 740H[J].Proceedings of the CSEE,2015,35(17):4439-4444.
[26]YU Zhu-huan,LIU Lin,ZHANG Jun.Effect of carbon addition on carbide morphology of single crystal Ni-based superalloy[J].Transactions of Nonferrous Metals Society of China,2014,24(2):339-345.