Effect of solution treatment temperature on microstructure and properties of modified In617 alloy

doi:10.13251/j.issn.0254-6051.2021.08.021

Abstract

Abstract: Effects of solution treatment temperature on microstructure and properties of modified In617 alloy were studied by means of OM and SEM characterization, EDS analysis and mechanical properties test. The results show that the average grain size of the alloy increases from 18 μm to 183 μm after solution treatment at 950-1200 ℃ for 2.5 h. The kinetic model of grain growth of the alloy during solution treatment at 950-1200 ℃ is established. When the solution treatment temperature is 1000 ℃, the M₂₃C₆ carbide at grain boundary is re-dissolved. When the solution treatment temperature exceeds 1100 ℃, the dissolution of M₆C carbides is basically completed, and only large-size MC carbides exist in the alloy. When the solid solution treatment temperature rises, the mixed grain phenomenon occurs, and the high temperature strength of the alloy gradually decreases, which is mainly due to the gradual redissolution of the carbides. When the solid solution treatment temperature is 1050 ℃, the strength of the alloy decreases a little due to insufficient dissolution of the carbides at grain boundary. When the solution treatment temperature increases to 1200 ℃, the strength of the alloy is greatly reduced due to that the carbides at grain boundary disappear and the grain growth.

Key words: modified In617 alloy, solution treatment temperature, carbide, microstructure, mixed grain, mechanical properties

CLC Number:

TG156.94

Li Qi, Chen Zhengzong, Jiang Xinliang, Liu Zhengdong, Zuo Liang. Effect of solution treatment temperature on microstructure and properties of modified In617 alloy[J]. Heat Treatment of Metals, 2021, 46(8): 109-114.

References

[1]迟成宇, 于鸿垚, 谢锡善, 等. 世界700 ℃等级先进超超临界电站关键高温材料[J]. 世界钢铁, 2013, 13(2): 42-59.
Chi Chengyu, YuHongyao, Xie Xishan, et al. Critical high temperature materials for 700 ℃ A-USC power plants[J]. World Iron and Steel, 2013, 13(2): 42-59.
[2]Viswanathan R, Coleman K, Rao U. Materials for ultra-supercritical coal-fired power plant boilers[J]. International Journal of Pressure Vessels and Piping, 2006, 83(11/12): 778-783.
[3]林富生, 谢锡善, 赵双群, 等. 我国 700 ℃超超临界锅炉过热器管用高温合金选材探讨[J]. 动力工程学报, 2011, 31(12): 960-967.
Lin Fusheng, Xie Xishan, Zhao Shuangqun, et al. Selection of superalloys for superheater tubes of domestic 700 ℃ A-USC boilers[J]. Chinese Journal of Power Engineering, 2011, 31(12): 960-967.
[4]向雪梅, 董建新, 江河, 等. 617B镍基高温合金长期时效组织演变[J]. 稀有金属材料与工程, 2019, 48(3): 865-872.
Xiang Xuemei, Dong Jianxin, Jiang He, et al. Microstructure evolution of 617B Ni-based superalloy during long-term aging[J]. Rare Metal Materials and Engineering, 2019, 48(3): 865-872.
[5]杨康, 祝志超, 张雪姣, 等. 镍基617合金的热变形和动态再结晶行为[J]. 材料热处理学报, 2019, 40(10): 151-157.
Yang Kang, Zhu Zhichao, Zhang Xuejiao, et al. Hot deformation and dynamic recrystallization behavior of nickel-based alloy 617[J]. Transactions of Materials and Heat Treatment, 2019, 40(10): 151-157.
[6]郭翔宇. 617镍基合金焊接接头不同温度下断裂韧性研究[D]. 上海: 上海交通大学, 2019.
[7]Gariboldi E, Cabibbo M, Spigarelli S, et al. Investigation on precipitation phenomena of Ni-22Cr-12Co-9Mo alloy aged and crept at high temperature[J]. International Journal of Pressure Vessels and Piping, 2007, 85(1): 63-71.
[8]张凯, 师梦杰, 郑合凤, 等. Inconel 617合金中第二相的析出规律研究[J]. 原子能科学技术, 2019, 53(12): 2428-2434.
Zhang Kai, Shi Mengjie, Zheng Hefeng, et al. Precipitation mechanism of secondary phase in Inconel 617 alloy[J]. Atomic Energy Science and Technology, 2019, 53(12): 2428-2434.
[9]Chomette S, Gentzbittel J M, Viguier B. Creep behavior of as received, aged and cold worked Inconel 617 at 850 ℃ and 950 ℃[J]. Journal of Nuclear Materials, 2010, 399: 266-274.
[10]Marcello C, Elisabett A G, Stefano S, et al. Creep behavior of Incoloy alloy 617[J]. Journal of Materials Science, 2008, 43(8): 2912-2921.
[11]郭岩, 侯淑芳, 周荣灿, 等. 晶界M₂₃C₆碳化物对IN617合金力学性能的影响[J]. 动力工程学报, 2010, 30(10): 804-808.
Guo Yan, Hou Shufang, Zhou Rongcan, et al. Effect of grain-boundary M₂₃C₆ carbides on mechanical properties of Inconel alloy 617[J]. Chinese Journal of Power Engineering, 2010, 30(10): 804-808.
[12]郭岩, 周荣灿, 侯淑芳, 等. 镍基合金的析出相及强化机制[J]. 金属热处理, 2011, 36(7): 46-50.
Guo Yan, Zhou Rongcan, Hou Shufang, et al. Precipitates and strengthening mechanism in Ni-based alloys[J]. Heat Treatment of Metals, 2011, 36(7): 46-50.
[13]孙艳容. 不同热处理制度对Inconel718合金组织和性能的影响[D]. 成都: 西南石油大学, 2018.
[14]田仲良, 陈正宗, 何西扣, 等. 固溶处理对超超临界电站用镍基耐热合金组织及性能的影响[J]. 金属热处理, 2020, 45(3): 97-102.
Tian Zhongliang, Chen Zhengzong, He Xikou, et al. Effect of solution treatment on microstructure and mechanical properties of heat-resisting Ni-based alloy used for ultra-supercritical power plant[J]. Heat Treatment of Metals, 2020, 45(3): 97-102.
[15]Wang X, Huang Z W, Cai B, et al. Formation mechanism of abnormally large grains in a polycrystalline nickel-based superalloy during heat treatment processing[J]. Acta Materialia, 2019, 168: 287-298.
[16]陈正宗, 刘正东, 包汉生, 等. 固溶处理对CN617耐热合金组织和硬度的影响[J]. 金属热处理, 2014, 39(12): 27-30.
Chen Zhengzong, Liu Zhengdong, Bao Hansheng, et al. Effects of solution treatment on microstructure and hardness of heat-resistant alloy CN617[J]. Heat Treatment of Metals, 2014, 39(12): 27-30.
[17]Rai A K, Trpathy H, Hajra R N, et al. Thermophysical properties of Ni based superalloy 617[J]. Journal of Alloys and Compounds, 2017, 698: 442-450.
[18]丰涵, 宋志刚, 郑文杰, 等. 固溶处理对Inconel690合金组织和力学性能的影响[J]. 钢铁研究学报, 2009, 21(3): 46-50.
Feng Han, Song Zhigang, Zheng Wenjie, et al. Effect ofsolution treatment on microstructure and mechanical property of Inconel 690[J]. Journal of Iron and Steel Research, 2009, 21(3): 46-50.
[19]Wu T Z, Shan L J, Rui H, et al. Effects ofsolution heat treatment on carbide of Ni-Cr-W superalloy[J]. Rare Metal Materials and Engineering, 2010, 39(7): 1157-1161.
[20]Wang M, Xiao D H, Liu W S, et al. Effect of Si addition on microstructure and properties of magnesium alloys with high Al and Zn contents[J]. Vacuum, 2017, 141: 144-151.
[21]Zhang H L, Ding H S, Wang Q, et al. Microstructures and tensile properties of directionally solidified Ti-45Al-2Cr-2Nb alloy by electromagnetic cold crucible zone melting technology with Y₂O₃ moulds[J]. Vacuum, 2018, 148: 206-213.