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 740H 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.
参考文献
| [1] | 郭岩;林琳;侯淑芳;王博涵.国产TP310HCbN钢在高温应力下的组织结构[J].中国电力,2012(10):42-47. |
| [2] | 郭岩;贾建民;侯淑芳;唐丽英;林琳.国产TP347HFG钢的水蒸汽氧化行为研究[J].腐蚀科学与防护技术,2011(06):505-509. |
| [3] | 迟成宇;董建新;刘文庆;谢锡善.3DAP研究Super304H耐热不锈钢中富Cu相的析出行为[J].金属学报,2010(9):1141-1146. |
| [4] | Shuai Guan;Chuan-Yong Cui.A Newly Developed Wrought Ni-Fe-Cr-based Superalloy for Advanced Ultra-Supercritical Power Plant Applications Beyond 700 ℃[J].金属学报（英文版）,2015(9):1083-1088. |
| [5] | Joachim Rosler;Martin Gotting;Dominique Del Genovese;Bernd Bottger;Reiner Kopp;Markus Wolske;Florian Schubert;Heinz-Josef Penkalla;Tomas Seliga;Andreas Thoma;Alfred Scholz;Christina Berger.Wrought Ni-base superalloys for steam turbine applications beyond 700℃[J].Advanced Engineering Materials,20037(7):469-483. |
| [6] | S.R.J. Saunders;M. Monteiro F. Rizzo.The oxidation behaviour of metals and alloys at high temperatures in atmospheres containing water vapour: A review[J].Progress in materials science,20085(5):775-837. |
| [7] | 刘丽荣;金涛;刘金来;孙晓峰;胡壮麒.Ru对单晶高温合金中γ'相析出行为和演化的影响[J].中国有色金属学报（英文版）,2013(1):14-22. |
| [8] | M. R. JAHANGIRI;H. ARABI;S. M. A. BOUTORABI.两种不同方法制备的IN939高温合金在长时间时效过程中的组织稳定性的比较[J].中国有色金属学报（英文版）,2014(06):1717-1729. |
| [9] | Elisabetta Gariboldi;Marcello Cabibbo;Stefano Spigarelli;Dario Ripamonti.Investigation on precipitation phenomena of Ni-22Cr-12Co-9Mo alloy aged and crept at high temperature[J].International Journal of Pressure Vessels and Piping,20081/2(1/2):63-71. |
| [10] | Yan GUO;Bohan WANG;Shufang HOU.Aging Precipitation Behavior and Mechanical Properties of Inconel 617 Superalloy[J].金属学报（英文版）,2013(3):307-312. |
| [11] | QUANYAN WU;HYOJIN SONG;ROBERT W. SWINDEMAN.Microstructure of Long-Term Aged IN617 Ni-Base Superalloy[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,200811(11):2569-2585. |
| [12] | Darius Tytko;Pyuck-Pa Choi;Jutta Klower.Microstructural evolution of a Ni-based superalloy (617B) at 700 °C studied by electron microscopy and atom probe tomography[J].Acta materialia,20124(4):1731-1740. |
| [13] | 郭岩;张周博;周荣灿;侯淑芳;王博涵.镍基合金617B的微观组织与力学性能[J].中国有色金属学报（英文版）,2015(4):1106-1113. |
| [14] | Zhao SQ;Xie XS;Smith GD;Patel SJ.The corrosion of INCONEL alloy 740 in simulated environments for pulverized coal-fired boiler[J].Materials Chemistry and Physics,20052/3(2/3):275-281. |
| [15] | N.D. Evans;P.J. Maziasz;R.W. Swindeman.Microstructure and phase stability In INCONEL alloy 740 during creep[J].Scripta materialia,20046(6):503-507. |
| [16] | S.Q. Zhao;Y. Jiang;J.X. Dong;X.S. Xie.EXPERIMENTAL INVESTIGATION AND THERMODYNAMIC CALCULATION ON PHASE PRECIPITATION OF INCONEL 740[J].金属学报（英文版）,2006(06):425-431. |
| [17] | 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 & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:277-286. |
| [18] | DANIEL H. BECHETTI;JOHN N. DUPONT;JOHN J. deBARBADILLO.Homogenization and Dissolution Kinetics of Fusion Welds in INCONEL~R Alloy 740H~R[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20147(7):3051-3063. |
| [19] | Wang, J.;Dong, J.;Zhang, M.;Xie, X..Hot working characteristics of nickel-base superalloy 740H during compression[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:61-70. |
| [20] | Chong Yan;Liu Zhengdong;Andy Godfrey;Liu Wei;Weng Yuqing.Microstructure evolution and mechanical properties of Inconel 740H during aging at 750 °C[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2014:153-164. |
| [21] | 谢锡善;赵双群;董建新;张麦仓.超超临界电站用Inconel 740镍基合金的组织稳定性及其改型研究[J].动力工程学报,2011(8):638-643. |
| [22] | 郭岩;周荣灿;张红军;张周博;侯淑芳;王博涵.镍基合金740 H的组织结构与析出相分析[J].中国电机工程学报,2015(17):4439-4444. |
| [23] | 余竹焕;刘林;张军.碳对镍基单晶高温合金碳化物形貌的影响[J].中国有色金属学报（英文版）,2014(2):339-345. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%