MICROSTRUCTURE AND MECHANICAL PROPER- TIES OF WELDING JOINT OF A NEW CORROSION RESISTANT Ni-BASED ALLOY

doi:10.11900/0412.1961.2014.00233

Acta Metall Sin

2014, Vol. 50

Issue (11): 1377-1383 DOI: 10.11900/0412.1961.2014.00233

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MICROSTRUCTURE AND MECHANICAL PROPER- TIES OF WELDING JOINT OF A NEW CORROSION RESISTANT Ni-BASED ALLOY

ZHAO Xia^1,², LIU Yang³, ZHA Xiangdong², CHENG Leming³, MA Yingche²(

), LIU Kui²

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, LIU Yang, ZHA Xiangdong, CHENG Leming, MA Yingche, LIU Kui. MICROSTRUCTURE AND MECHANICAL PROPER- TIES OF WELDING JOINT OF A NEW CORROSION RESISTANT Ni-BASED ALLOY. Acta Metall Sin, 2014, 50(11): 1377-1383.

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Abstract

Industrial wastewater shows the characteristics of high concentration, complex composition and difficulty to degrade. Supercritical water oxidation (SCWO) gains extensive attention and application in wastewater treatment. This method of wastewater treatment is carried out in the high temperature, high pressure, strong corrosion and oxidation conditions. Thus, the corrosion resistance of the materials used in the treatment equipment should possess excellent performance. Especially for the preheater or reactor piping material, the problem is more outstanding. In this work, a new corrosion resistant Ni-based alloy used in supercritical water oxidation environment was investigated. The microstructure and fracture morphologies of the welding joint were observed and analyzed by OM, SEM and EDS, and the microhardness, tensile strength and other mechanical properties were tested as well. The results indicate that the welding seam of the alloy welding joint can be categorized into cast structure. The microstructure of fusion zone has no welding defect, and the heat affected zone (HAZ) has no grain coarsening phenomenon. The grain size of the alloy is 65 mm. The Vickers hardness of the alloy welding seam are less than the matrix. However, as the number of isometric crystals increases, the Vickers hardness of welding remelting zone becomes large. Because of including W, Mo, Al ,Ti in the alloy, X-2# alloy welding joint has good high-temperature strength and thermal stability. Due to the tensile strength of welding joints in the new alloys is lower than the parent materials, the welding seam is the weakest link. The tensile tests at room temperature and high temperature show tenacity fractures, and the fracture mechanism is mixed with normal fault and shear fault.

Key words: Ni-based corrosion resistant alloy welding seam zone fusion zone heat affected zone

Received: 25 July 2014

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	Xia ZHAO
	Yang LIU
	Xiangdong ZHA
	Leming CHENG
	Yingche MA
	Kui LIU

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https://www.ams.org.cn/EN/10.11900/0412.1961.2014.00233 OR https://www.ams.org.cn/EN/Y2014/V50/I11/1377

Fig.1 Position of welding joint for microhardness test

Fig.2 Geometry of tensile specimen (unit: mm)

Fig.3 OM images of welding joints of X-2# alloy

(a) base material

(b) welding seam

(d) fusion zone

(e) heat affected zone (HAZ)

Fig.4 Distribution of microhardness of welding joints of X-2# alloy

(a) positive welding seam

(b) negative welding seam

(d) central of welding seam

Fig.5 Morphologies of welding joints of X-2# alloy after tensile test under 20 ℃ (a), 300 ℃ (b), 400 ℃ (c), 500 ℃ (d), 600 ℃ (e) and 700 ℃ (f)

Table 1 Tensile test results of welding joints of X-2# alloy under different temperatures

Fig.6 Fracture morphologies of welding joints of X-2# alloy after tensile test under 20 ℃ (a), 300 ℃ (b), 400 ℃ (c), 500 ℃ (d), 600 ℃ (e) and 700 ℃ (f)

Fig.7 Morphology of inclusion of dimple fracture

[1]	Ding Z H. Organic Wastewater Treatment Technology and Its Application. Beijing: Chemical Industry Press, 2002: 1
	(丁忠浩. 有机废水处理技术及应用. 北京: 化学工业出版社, 2002: 1)
[2]	Ma C Y, Zhao X C, Zhu F L, Guo K Q, Wu R X. Modern Chem Ind, 2007; 27: 497
	(马承愚, 赵晓春, 朱飞龙, 郭凯琴, 吴荣霞. 现代化工, 2007; 27: 497)
[3]	Zhang P, Wang J C, Zhang X D, Liu X W, Xia Y J, Li Z Y. Environ Prot Sci, 2003; 29(5): 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; 29(5): 15)
[4]	Zhu F W, Zhang L F, Qiao P P, Liu R Q, Bao Y C, Chen Y Q. Nucl Power Eng, 2009; 30(5): 62
	(朱发文, 张乐福, 乔培鹏, 刘瑞芹, 鲍一晨, 陈宇清. 核动力工程, 2009; 30(5): 62)
[5]	Kritzer P. J Supercrit Fluids, 2004; 29: 1
[6]	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(1-3): 176
[7]	Yin K J, Qiu S Y, Tang R, Zhang Q, Zhang L F. J Supercrit Fluids, 2009; 50: 235
[8]	Tan L, Ren X, Allen T R. Corros Sci, 2010; 52: 1520
[9]	Ampornrat P, Was G S. J Nucl Mater, 2007; 371(1-3): 1
[10]	Chen Y, Sridharan K, Allen T R. Corros Sci, 2006; 48: 2843
[11]	Tan L Z, Yang Y, Allen T R. Corros Sci, 2006; 48: 4234
[12]	Tan L Z, Yang Y, Allen T R. Corros Sci, 2006; 48: 3123
[13]	Wright L G, Dooley R B. Int Mater Rev, 2010; 55: 129
[14]	Sun C W, Hui R. Corros Sci, 2009; 51: 2508
[15]	Chen Y, Sridharan K, Ukai S, Allen T R. J Nucl Mater, 2007; 371: 118
[16]	Cho H S, Kimura A. J Nucl Mater, 2007; 367-370: 1180
[17]	Isselin J, Kasada R, Kimura A. Corros Sci, 2010; 52: 3266
[18]	Siwy A D, Clark T E, Motta A T. J Nucl Mater, 2009; 392: 280
[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, Svensson J E, Johansson L G. 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]	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)
[27]	Dupont J N, Lippold J C, Kiser S D. Welding Metallurgy and Weldability of Nickel-base Alloys. Hoboken: John Wiley & Sons Inc, 2009: 47
[28]	Sima A P. Master Thesis, Shanghai Jiao Tong University, 2009
	(司马爱平. 上海交通大学硕士学位论文, 2009)
[29]	Zheng C Q,Zhou L,Zhang K S. Study on Mechanical and Its Application to Mesoscopic Metal Ductile Damage. Beijing: National Defence Industry Press, 1995: 27
	(郑长卿,周利,张克实. 金属韧性破坏的细观力学及其应用研究. 北京: 国防工业出版社, 1995: 27)
[30]	Zhao B H,He L,Yao Y M. Welding Processing Technology and Quality Testing, Failure Analysis and Metallograph Practical Handbook. Beijing: Metallurgical Industry Press, 2006: 1203
	(赵炳辉,何伦,姚一鸣. 焊接件加工处理工艺与质量检测、失效分析技术及金相图谱实用手册. 北京: 冶金工业出版社, 2006: 1203)

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