Characteristics of microstructures and side-bend properties of Inconel 690 Ni-based alloy deposited on stainless steel 347 surface
-
摘要: 采用GTAW自动化焊接方法在347不锈钢表面堆焊了Inconel 690镍基合金。通过优化工艺参数,控制熔合比得到了无明显缺陷的堆焊组织,在此基础上分析研究了堆焊组织的特征与侧弯性能。结果表明,正交设计优化后的最佳工艺参数为焊接电流160 A、送丝速度100 cm/min、焊接速度15 cm/min;对应于界面往堆焊中心位置,堆焊组织逐步由柱状树枝晶向等轴树枝晶转变,树枝晶主要由γ-Ni (Cr,Fe)固溶体组成,同时还有少量的富Nb相在枝晶间形成偏析;据ASME QW-462.5(d)标准截取侧弯试验检测无明显裂纹产生。Abstract: By using automatic GTAW method,Inconel 690 Ni based metal was deposited on 347 stainless steel base metal. At the optimized process parameters to control penetration ratio,the microstructures of the deposited metal and side bending property were analyzed and tested.The results show that the optimized process parameters are 160 A of welding current,100 cm/min of wire feed speed and 15 cm/min of welding speed. The microstructures for the corresponding positions far away from interface are columnar dendrites and equiaxed dendrites. The dendrites is mainly consisted of γ-Ni(Cr,Fe) solid solution,and some Nb rich phase appears between the dendrites. Based on ASME QW-462. 5(d) standard,there are no obvious cracks in the samples selected randomly.
-
Keywords:
- surfacing /
- microstructures /
- interfacial structures /
- side bending properties
-
-
[1] 陈峰, 刘国辉, 林巧力, 等. 347不锈钢表面堆焊690镍基合金电化学腐蚀性能研究[J], 动力工程学报, 2016, 36(4):326-330. [2] 王娜, 纪强. 管板堆焊镍基合金625焊接工艺[J], 焊接, 2016(6):53-55. [3] 朱兴华.Inconel690镍基合金材料焊接技术要点[J].电子世界, 2013(14):189. [4] 张皓月. S, P对Inconel690焊丝熔敷金属结晶裂纹敏感性影响的研究[D].北京:机械科学研究总院硕士学位论文, 2011. [5] 李远, 张立德, 王金龙.INCONEL690镍基合金带极电渣堆焊工艺研究[J].锅炉制造, 2011(02):48-51. [6] Ramirez A, Lippold J C. High temperature cracking in nickel-base weld metal, Part 2-Insight into the mechanism [J]. Materials Science and Engineering A, 2004, 380:245-258.
[7] 于建平. CMT焊接在堆焊(包覆)镍基耐蚀合金层中的应用[J]. 石油化工设备技术, 2013, 34(5):49-52. [8] 林海燕. 核电蒸汽发生器管板镍基合金 Inconel 690 电渣堆焊工艺研究[D]. 哈尔滨: 哈尔滨工业大学硕士学位论文, 2013. [9] Reena A, Santosh K. Effect of specific energy input on microstructure and mechanical properties of nickel-base intermetallic alloy deposited by laser cladding [J]. Mettallurgical and Materials Transactions A, 2012, 12(43): 4688-4696.
-
期刊类型引用(0)
其他类型引用(3)
计量
- 文章访问数: 315
- HTML全文浏览量: 0
- PDF下载量: 5
- 被引次数: 3