Oxidation Behavior during High Temperature Homo-genization Treatment of Cast Ni-Fe Based Corrosion Resistant 925 Alloy

doi:10.11902/1005.4537.2016.189

Journal of Chinese Society for Corrosion and protection

2017, Vol. 37

Issue (1): 1-8 DOI: 10.11902/1005.4537.2016.189

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Oxidation Behavior during High Temperature Homo-genization Treatment of Cast Ni-Fe Based Corrosion Resistant 925 Alloy

Zhan ZHAO,Jingyang LI,Jianxin DONG(

),Zhihao YAO,Maicang ZHANG

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

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Abstract

The oxidation behavior of the as-cast 925 superalloy were investigated in the temperature range of 1130~1190 ℃ by means of mass change measurement, X-ray diffractometer, scanning electron microscopy and energy dispersive X-ray spectroscopy. The results show that after homogenization treatment at 1160 ℃ for 20 h, the formed oxide-scale showed three-layered structure: an internal oxidation layer composed of Al₂O₃ and TiO₂, a continuous and dense middle layer of Cr₂O₃ and an outmost layer of the spinel oxidation of Cr and Fe. When the homogenization time increased, the layer of Cr₂O₃ became thinner and the spinel oxides of Cr and Fe begun to break down and the oxidation was aggravated. Taking the oxidation behavior of the alloy during homogenization into account, the appropriate homogenization of 925 superalloy should be conducted at 1160 ℃ for 20 h.

Key words: 925 superalloy homogenization high temperature oxidation

Received: 29 September 2016

Fund: Supported by National Natural Science Foundation of China (51571012)

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	Zhan ZHAO
	Jingyang LI
	Jianxin DONG
	Zhihao YAO
	Maicang ZHANG

Cite this article:

Zhan ZHAO,Jingyang LI,Jianxin DONG,Zhihao YAO,Maicang ZHANG. Oxidation Behavior during High Temperature Homo-genization Treatment of Cast Ni-Fe Based Corrosion Resistant 925 Alloy. Journal of Chinese Society for Corrosion and protection, 2017, 37(1): 1-8.

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https://www.jcscp.org/EN/10.11902/1005.4537.2016.189 OR https://www.jcscp.org/EN/Y2017/V37/I1/1

Fig.1 Microstructure of dendrites of 925 alloy (a) and its magnified image (b)

Fig.2 Equilibrium phase diagram of 925 superalloy (a) and its magnification (b)

Fig.3 Segregation index of Ti and Fe after homogenisation and microstructure of interdendritic

Fig.4 Cross-sectional morphologies of the 925 alloy oxide layer after oxidation at 1160 ℃ for 5 h (a), 10 h (b) and 20 h (c)

Fig.5 Isothermal oxidation kinetics curves of 925 alloy at different temperatures in air

Fig.6 Micro-surface morphologies of 925 alloy after oxidation at 1160 ℃ for 1 h (a), 5 h (b), 20 h (c) and 50 h (d)

Fig.7 XRD spectra of oxide layer after different time at 1160 ℃ (a) and the powder desquamated after oxidation for 50 h at 1160 ℃ (b)

Fig.8 Cross-sectional morphology characterization (a) and elemental Cr (b), O (c),Fe (d), Ti (e) and Al (f) distribution of 925 alloy oxide layer after oxidation at 1160 ℃ for 1 h

Fig.9 Cross-sectional morphology characterization (a) and elemental Cr (b), O (c), Fe (d), Al (e) and Ti (f) distribution of 925 alloy oxide layer after oxidation at 1160 ℃ for 5 h

Fig.10 Cross-sectional morphology characterization (a) and elemental Cr (b), O (c), Al (d), Fe (e) and Ti (f) distribution of 925 alloy oxide layer after oxidation at 1160 ℃ for 10 h

Fig.11 Cross-sectional morphology characterization (a) and elemental Cr (b), O (c), Fe (d), Al (e) and Ti (f) distribution of 925 alloy oxide layer after oxidation at 1160 ℃ for 50 h

Fig.12 Oxidation behabior and mechanism of 925 alloy in 1160 ℃ at the early stages (a), continuous oxidation process (b, c) and the late stage (d)

Fig.13 Segregation index and thickness curves of oxide layer of 925 alloy after homogenization at 1160 ℃

[1]	Ganesan P, Clatworthy E F, Harris J A.Development of a time-temperature transformation diagram for alloy 925[J]. Corrosion, 1988, 44: 827
[2]	Amiri A, Bruschi S, Sadeghi M H, et al.Investigation on hot deformation behavior of Waspaloy[J]. Mater. Sci. Eng., 2013, A562: 77
[3]	Puckett B, Hibner E.High strength corrosion resistant nickel base alloy 725HS for severe sour oil and gas field applications [A]. Corrosion 2003[C]. San Diego: NACE International, 2003
[4]	Hibner E L, Shoemaker L E.The advantages of nickel alloys for seawater service [A]. Corrosion 2000[C]. Orlando: NACE International, 2000
[5]	Francis E M, Grant B M B, da Fonseca J Q, et al. High-temperature deformation mechanisms in a polycrystalline nickel-base superalloy studied by neutron diffraction and electron microscopy[J]. Acta Mater., 2014, 74: 18
[6]	Shi Z X, Yan X F, Duan C H, et al.Effects of primary aging temperature on microstructures and mechanical properties of new corrosion-resistant alloy GH925 with high strength[J]. Chin. J. Nonferrous Met., 2015, 25(7): 1822
[6]	(石照夏, 颜晓峰, 段春华等. 一次时效温度对新型高强耐蚀GH925合金显微组织和力学性能的影响[J]. 中国有色金属学报, 2015, 25(7): 1822
[7]	Shi Z X, Yan X F, Duan C H.Characterization of hot deformation behavior of GH925 superalloy using constitutive equation, processing map and microstructure observation[J]. J. Alloys Compd., 2015, 652: 30
[8]	Mannan S, Hibner E, Puckett B.Physical metallurgy of alloys 718, 725, 725HS, 925 for service in aggressive corrosive environments[A]. Corrosion 2003[C]. San Diego: NACE International, 2003
[9]	Dong J X, Li L H, Li H Y, et al.Effect of extent of homogenization on the hot deformation recrystallization of superalloy ingot in cogging process[J]. Acta Metall. Sin., 2015, 51: 1207
[9]	(董建新, 李林翰, 李浩宇等. 高温合金铸锭均匀化程度对开坯热变形的再结晶影响[J]. 金属学报, 2015, 51: 1207)
[10]	Jiang H, Dong J X, Zhang M C, et al.Oxidation behavior and mechanism of Inconel 740H alloy for advanced ultra-supercritical power plants between 1050 and 1170 ℃[J]. Oxid. Met., 2015, 84: 61
[11]	Wang J, Wu Y, Dong J X, et al.Microstructure and homogenization of as-cast GH4700 alloy for 700 ℃ ultra-supercritical boilers[J]. Rare Met. Mater. Eng., 2013, 42: 1908
[11]	(王珏, 吴赟, 董建新等. 700 ℃超超临界锅炉材料GH4700合金铸态组织及均匀化工艺[J]. 稀有金属材料与工程, 2013, 42: 1908
[12]	Yang S W, Wang J Y, Sun J, et al.High temperature oxidation of the DZ4 directionally-solidified superalloy[J]. J. Harbin Eng. Univ., 2008, 29: 95
[12]	(杨世伟, 王俊一, 孙杰等. DZ4定向凝固合金的抗高温氧化行为研究[J]. 哈尔滨工程大学学报, 2008, 29: 95
[13]	Hussain N, Shahid K A, Khan I H, et al.Oxidation of high-temperature alloys (superalloys) at elevated temperatures in air. II[J]. Oxid. Met., 1995, 43: 363
[14]	Wang M J, Xin R S, Long S S, et al.Oxidation behavior of 316LN stainless steel at solution state[J]. Trans. Mater. Heat Treat., 2012, 33(8): 74
[14]	(王明家, 信瑞山, 龙珊珊等. 固溶态316LN不锈钢的氧化行为[J]. 材料热处理学报, 2012, 33(8): 74
[15]	Liu F J, Zhang M C, Dong J X, et al.High temperature oxidation behavior of FGH95 alloy[J]. J. Univ. Sci. Technol. Beijing, 2007, 29: 704
[15]	(刘丰军, 张麦仓, 董建新等. FGH95合金的高温氧化行为[J]. 北京科技大学学报, 2007, 29: 704

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