MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A NEW CORROSION-RESISTING NICKEL-BASED ALLOY AND 625 ALLOY DISSIMILAR METAL WELDING JOINT

doi:10.11900/0412.1961.2014.00285

Acta Metall Sin

2015, Vol. 51

Issue (2): 249-256 DOI: 10.11900/0412.1961.2014.00285

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MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A NEW CORROSION-RESISTING NICKEL-BASED ALLOY AND 625 ALLOY DISSIMILAR METAL WELDING JOINT

ZHAO Xia^1,², ZHA Xiangdong², LIU Yang³, ZHANG Long², LIANG Tian², MA Yingche²(

), CHENG Leming³

1 School of Materials and Metallurgy, Northeastern University, Shenyang 110819
2 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
3 ENN Science & Technology Development Co. Ltd., Langfang 065001

Cite this article:

ZHAO Xia, ZHA Xiangdong, LIU Yang, ZHANG Long, LIANG Tian, MA Yingche, CHENG Leming. MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A NEW CORROSION-RESISTING NICKEL-BASED ALLOY AND 625 ALLOY DISSIMILAR METAL WELDING JOINT. Acta Metall Sin, 2015, 51(2): 249-256.

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Abstract

With the fast development of industry, pollution becomes a very serious problem. The industrial and life wastewater are discharged and cause the environment pollution. Supercritical water oxidation (SCWO) becomes the most effective method to treat the wastewater. But the material used in the equipment plays a key role in restricting the application of the SCWO process. Currently, during the SCWO wastewater treatment process, 304 austenitic stainless steel, Alloy 625, P91 and P92 steels are the main preheater and reactor materials. In order to reduce the serious corrosion and improve economic efficiency of the materials for this process, a new corrosion resistant Ni-based alloy X-2# alloy has been developed with an aim of replacing the previous ones. In particular, it is highly important to the related behavior of this new alloy welding with the original SCWO. Therefore, the microstructure and mechanical properties of the welding joint of the new alloy and alloy 625 with manual argon arc welding were investigated. The microstructure and fracture morphologies of the welding joint were analyzed by OM, SEM and EDX. The micro-hardness, tensile strength and other mechanical properties were tested and analyzed. The results indicated that more isometric crystals in remelting zone to improve the welding seam strength and the microstructure in fusion zone of X-2# side did not show welding defects. However, some NbC and Laves phases formed near the fusion zone of 625 alloy sides, which affected the mechanical properties of material. Due to the influence of two thermal cycles near the remelting zone, the grains of heat affected zone (HAZ) were easy to grow. But the thermal stability of X-2# side HAZ could reach excellent level. Fine grains of 625 parent material led to grain growth seriously in HAZ, which reduced its Vickers hardness. Because of the tensile strength of welding joints of room temperature and 500 ℃ was lower than the parent materials, the welding seam could be the weakest link. The tesile fracture of X-2#/625 dissimilar metal welding joint was dimple morphology。

Key words: X-2#/625 welding joint welding seam fusion zone heat affected zone

Received: 27 May 2014

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	Xia ZHAO
	Xiangdong ZHA
	Yang LIU
	Long ZHANG
	Tian LIANG
	Yingche MA
	Leming CHENG

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https://www.ams.org.cn/EN/10.11900/0412.1961.2014.00285 OR https://www.ams.org.cn/EN/Y2015/V51/I2/249

Table1 Chemical compositions of parent materials

Fig.1 Schematic of positions of welding joint for micro-hardness test

Fig.2 Schematic of the tensile specimen (unit: mm)

Fig.3 Microstructures of parent material of X-2#/625 dissimilar metal welding joint

(a) X-2# alloy (b) 625 alloy

Fig.4 Microstructures of welding seam (a) and welding remelting zone (b) of X-2#/625 dissimilar metal welding joint

Fig.5 OM images of fusion zone on X-2# (a) and 625 (b) sides and SEM image of precipitates of 625 side fusion zone (c) of X-2#/625 dissimilar metal welding joint

Fig.6 SEM images (a, b) and EDS analysis (c, d) of NbC (a, c) and Laves phases (b, d) on 625 side fusion zone

Fig.7 Microstructure of heat affected zone (HAZ) on X-2# (a) and 625 (b) sides of X-2#/625 dissimilar metal welding joint

Fig.8 Distribution of micro-hardness of X-2#/625 dissimilar metal welding joints

Table 2 Mechanical properties of X-2#/625 dissimilar metal welding joints after tensile test at different temperatures

Fig.9 Macro-morphologies of X-2#/625 dissimilar metal welding joints after tensile test at different temperatures

Fig.10 Fracture morphologies of X-2#/625 dissimilar metal welding joints after tensile test at 20 ℃ (a) and 500 ℃ (b)

[1]	Li F, Wang H F, Zhu D. Shanghai J Electr Power, 2002; 18(1): 19
	(李锋, 汪海峰, 朱丹. 上海电力学院学报, 2002; 18(1): 19)
[2]	Zhang P, Wang J C, Zhang X D, Liu X W, Xia Y J, Li Z Y. Environ Prot Sci, 2003; 119(29): 15
	(张平, 王景昌, 张晓冬, 刘学武, 夏远景, 李志义. 环境保护科学, 2003; 119(29): 15)
[3]	Xiang B T, Wang T. Prog Chem Ind, 1997; (3): 28
	(向波涛, 王涛. 化工进展, 1997; (3): 28)
[4]	Xu J C, Xu B B, Jiang Y, Rong X S, Chen Z Y. Guangzhou Chem Ind, 2013; 41(9): 10
	(徐吉成, 徐滨滨, 蒋艳, 荣新山, 陈正宇. 广州化工, 2013; 41(9): 10)
[5]	Ma D Z, Zhang L, Yin D, Chen G. Coal Technol, 2011; 30(1): 202
	(马东祝, 张玲, 尹迪, 陈光. 煤炭技术, 2011; 30(1): 202)
[6]	Kritzer P. J Supercrit Fluids, 2004; 29: 1
[7]	Garcia K M, Mizia R E. In: Dan S ed., ASME Heat Transfer Division, New York: American Society of Mechanical Engineers, 1995: 299
[8]	Garcia K M. In: Charles H ed., International Mechanical Engineering Congress and Exhibition, New York: American Society of Mechanical Engineers, 1996: 17
[9]	Tan L, Ren X, Allen T R. Corros Sci, 2010; 52: 1520
[10]	Zhu F W, Zhang L F, Tang R, Qiao P P, Bao Y C. At Energy Sci Technol, 2010; 44(8): 979
	(朱发文, 张乐福, 唐睿, 乔培鹏, 鲍一晨. 原子能科学技术, 2010; 44(8): 979)
[11]	Sun Y. Master Thesis, Shanghai Jiao Tong University, 2013
	(孙耀. 上海交通大学硕士学位论文, 2013)
[12]	Sun C W, Hui R. Corros Sci, 2009; 51: 2508
[13]	Chen Y, Sridharan K, Ukai S, Allen T R. J Nucl Mater, 2007; 371: 118
[14]	Cho H S, Kimura A. J Nucl Mater, 2007; 367-370: 1180
[15]	Isselin J, Kasada R, Kimura A. Corros Sci, 2010; 52: 3266
[16]	Siwy A D, Clark T E, Motta A T. J Nucl Mater, 2009; 392: 280
[17]	Was G S, Ampornrat P, Gupta G, Teysseyrea S, Westa E A, Allenb T R, Sridharanb K, Tanb L, Chenb Y, Renb X, Pister C. J Nucl Mater, 2007; 371: 176
[18]	Wright L G, Dooley R B. Int Mater Rev, 2010; 55(3) :129
[19]	Zhu F W, Zhang L F, Tang R, Qiao P P, Liu R Q. At Energy Sci Technol, 2009; 43(6): 39
	(朱发文, 张乐福, 唐睿, 乔培鹏, 刘瑞芹. 原子能科学技术, 2009; 43(6): 39)
[20]	Was G S, Teysseyre S, Jiao Z. Corrosion, 2006; 62: 989
[21]	Sun M C, Wu X Q, Han E H, Rao J C. Scr Mater, 2009; 61: 996
[22]	Halvarsson M, Tang J E, Asteman H. Corros Sci, 2006; 48: 2014
[23]	Tan L, Ren X, Sridharan K, Allen T R. Corros Sci, 2008; 50: 3056
[24]	Sun M C, Wu X Q, Zhang Z E, Han E H. J Supercrit Fluids, 2008; 47: 309
[25]	Zhang Q, Tang R, Yin K J, Luo X, Zhang L F. Corros Sci, 2009; 51: 2092
[26]	Zhang Q, Tang R, Li C, Luo X, Yin K J. Nucl Eng Technol, 2009; 41(1): 107
[27]	Li L. Master Thesis, Shanghai Jiao Tong University, 2012
	(李力. 上海交通大学硕士学位论文, 2012)
[28]	Bao Y C. Master Thesis, Shanghai Jiao Tong University, 2011
	(鲍一晨. 上海交通大学硕士学位论文, 2011)
[29]	Cieslak M J. Weld J, 1991; 70(2): 49
[30]	Dupont J N, Lippold J C, Kiser S D. Welding Metallurgy and Weldability of Nickel-Base Alloys. Hoboken: John Wiley & Sons Inc, 2009: 47

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