The electron beam welding test of Inconel 718 nickel-based superalloy and 304 stainless steel was carried out, and the microstructure and mechanical properties of the joint were analyzed. The results show that the middle of the weld zone is composed of fine equiaxed grains, and in the near-nickel side and near-steel fusion lines, there are some growth directions. The hardness of the joints is different among WZ 304 stainless and Inconel 718 and the handless of WZ is higher than that of Inconel 718 and 304 stainless steel. When the welding beam is 8 mA and the welding speed is 700 mm/min, the tensile strength of the joint is 722 MPa. Tensile studies showed that the fracture occurred at the weld zone. The fracture featured a typical ductile fracture, consisting of the dimple of the isoaxial shape.
LI Ning
,
WANG Gang
,
WANG Ting
,
JIANG Siyuan
,
FEN Jicai
. Weldability of Inconel 718 and 304 stainless steel by electron beam welding[J]. Transactions of The China Welding Institution, 2019
, 40(2)
: 82
-85
.
DOI: 10.12073/j.hjxb.2019400047
[1] 吴冰, 李晋炜, 毛智勇, 等. 镍基高温合金电子束焊接接头疲劳性能[J]. 焊接学报, 2013, 34(8):109-112 Wu Bing, Li Jinwei, Mao Zhiyong, et al. Fatigue properties of electron beam welded joints of Nickelbase superalloy[J]. Transactions of the China Welding Institution, 2013, 34(8):109-112
[2] 张志强, 荆洪阳, 徐连勇, 等. 双相不锈钢多层多道焊接接头微观组织表征[J]. 焊接学报, 2017, 38(5):79-82 Zhang Zhiqiang, Jing Hongyang, Xu Lianyong, et al. Microstructure characterization of duplex stainless steel multi-pass welded joint[J]. Transactions of the China Welding Institution, 2017, 38(5):79-82
[3] Kangazian J, Shamanian M, Ashrafi A. Dissimilar welding between SAF 2507 stainless steel and Incoloy 825 Ni-based alloy:the role of microstructure on corrosion behavior of the weld metals[J]. Journal of Manufacturing Processes, 2017, 29:376-388.
[4] Chen J, Khalifa A, Xue L, et al. Laser weldability of Zr-2.5Nb alloy to AISI 410 stainless steel with Ni filler[J]. Journal of Materials Processing Technology, 2018, 255:184-194.
[5] Rodriguez J, Ramirez A J. Microstructural characterisation of friction stir welding joints of mild steel to Ni-based alloy 625[J]. Materials Characterization, 2015, 110:126-135.
[6] 冯吉才, 王廷, 张秉刚, 等. 异种材料真空电子束焊接研究现状分析[J]. 焊接学报, 2009, 30(10):108-112 Feng Jicai, Wang Ting, Zhang Binggang, et al. Research status analysis of electron beam welding for joining of dissimilar materials[J]. Transactions of the China Welding Institution, 2009, 30(10):108-112
[7] Ramkumar K D, Sridhar R, Periwal S, et al. Investigations on the structure-property relationships of electron beam welded Inconel 625 and UNS 32205[J]. Materials & Design, 2015, 68:158-166.
[8] Wiednig C, Lochbichler C, Enzinger N, et al. Dissimilar electron beam welding of nickel base alloy 625 and 9% Cr steel[J]. Procedia Engineering, 2014, 86:184-194.
[9] Silva C C, Miranda H C D, Motta M F, et al. New insight on the solidification path of an alloy 625 weld overlay[J]. Journal of Materials Research & Technology, 2013, 2(3):228-237.
[10] Aghajani A, Tewes J, Parsa A B, et al. Identification of Mo-Rich M23C6, Carbides in Alloy 718[J]. Metallurgical & Materials Transactions A, 2016, 47(9):4382-4392.
