激光焊接参数对C-276/304搭接焊缝组织及力学性能的影响

周思雨; 马广义; 柴东升; 于京令; 程波; 吴东江

doi:10.3788/OPE.20172513.0135

您当前的位置：

首页 >

文章列表页 >

激光焊接参数对C-276/304搭接焊缝组织及力学性能的影响

微纳技术与精密机械 | 更新时间：2020-08-13

- 激光焊接参数对C-276/304搭接焊缝组织及力学性能的影响
- Effect of laser welding parameters on microstucture and mechanical properties of C-276/304 overlapping weld
- 光学精密工程 2017年25卷第10s期页码：135-143
- 作者机构：
  
  大连理工大学精密与特种加工教育部重点实验室,辽宁大连,116024
- 作者简介：
- 基金信息：
  
  国家重点基础研究发展计划资助项目（No.2015CB057305）();国家自然科学基金资助项目（No.51402037）()
- DOI：10.3788/OPE.20172513.0135
  中图分类号： TG456.7
- 收稿日期：2017-05-27，
  
  修回日期：2017-06-29，
  
  纸质出版日期：2017-11-25
- 稿件说明：
移动端阅览
周思雨, 马广义, 柴东升等. 激光焊接参数对C-276/304搭接焊缝组织及力学性能的影响[J]. 光学精密工程, 2017,25(10s): 135-143

ZHOU Si-yu, MA Guang-yi, CHAI Dong-sheng etc. Effect of laser welding parameters on microstucture and mechanical properties of C-276/304 overlapping weld[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 135-143
周思雨, 马广义, 柴东升等. 激光焊接参数对C-276/304搭接焊缝组织及力学性能的影响[J]. 光学精密工程, 2017,25(10s): 135-143 DOI： 10.3788/OPE.20172513.0135.

ZHOU Si-yu, MA Guang-yi, CHAI Dong-sheng etc. Effect of laser welding parameters on microstucture and mechanical properties of C-276/304 overlapping weld[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 135-143 DOI： 10.3788/OPE.20172513.0135.

摘要

为实现CAP1400核主泵屏蔽套端部的可靠密封，采用Nd：YAG脉冲激光对C-276哈氏合金与奥氏体不锈钢304进行异质材料的搭接焊接。采用光学显微镜及扫描电子显微镜观测焊缝形貌及微观组织，运用能谱仪检测焊缝内的元素成分，利用电子探针测量焊缝内的元素分布，通过机械撕裂实验评价焊接接头的力学性能。机械撕裂实验结果指出，不同脉冲能量下，断裂均发生于焊缝，且为拉伸断裂形式，当脉冲能量为3~4 J时，焊缝抗机械撕裂强度达到最大，约为78 N/mm。优化的焊接参数范围为：脉冲能量3~4 J、焊接速度125~200 mm/min、脉冲频率30 Hz、脉宽6~8 ms、离焦量-1~0 mm。结果表明，脉冲能量和脉冲频率对搭接焊缝结合宽度影响较大，但过大脉冲能量及脉冲频率、过小脉冲宽度会造成焊缝表面的塌陷及严重飞溅。随着脉冲能量的增大，304母材未熔合区宽度下降，焊缝内析出相含量降低。在较高的脉冲能量下，焊缝内柱状晶及等轴晶组织粗化，由元素烧蚀导致的微孔数量及尺寸较大。随着304母材在焊缝内稀释率的提高，焊缝内的元素含量与304母材的差异缩小，焊缝内的元素分布均匀程度降低。

Abstract

In order to realizereliable seal welding at the end of CAP1400 nuclear reactor coolant pimp can

Nd:YAG pulsed laser was adopted to implement overlapping weld of dissimilar materials of Hastelloy C-276 and austenite stainless steel 304. Optical microscope and scanning electron microscope were adopted to observe morphology and microstructure of the weld metal. EDS was used to detect elementary composition in weld

electron probe was used to measure element distribution in weld and mechanical property of welded joint was evaluated by mechanical tearing experiment. Result of mechanical tearing experiment indicates that fracture occurs in weld under different plus energy

and it is tension fracture. When plus energy is 3-4 J

mechanical tearing resistance strength of weld reaches the maximum and is about 78 N/mm. Optimized weld parameter scopes are:pulse energy 3-4 J

welding speed 125-200 mm/min

pulse frequency 30 Hz

pulse width 6-8 ms

and defocusing amount -1-0 mm. The result shows that the effect of pulse energy and pulse frequency on joint width of overlapping weld is relatively large

but excessively large pulse energy and pulse frequency and excessively small pulse width will cause collapse and serious spatter of weld surface. Along with increase of pulse energy

width of incomplete fusion zone in the side of 304 parent material decreases

content of precipitated phase in weld is reduced. Under relatively high pulse energy

columnar crystal and equiaxed structure in weld coarsen

quantity and size of micropore caused by element ablation is relatively large. Along with improvement of dilution rate of 304 parent material in weld

difference between element content and 304 parent material in weld is reduced

and uniformity of element distribution in weld decreases.

关键词

Keywords

references

郭玉泉,吴东江,马广义,等. 夹具拘束距离对Hastelloy C-276薄板脉冲激光焊接变形的影响[J]. 光学精密工程, 2012, 20(11):2465-2471. GUO Y Q, WU D J, Ma G Y, et al. Influence of fixture restrain distance on pulsed laser welding distortion of Hastelloy C-276 thin sheet[J]. Opt. Precision Eng., 2012, 20(11):2465-2471. (in Chinese)

张克华,石栋,刘润之,等. 电化学机械复合抛光薄膜太阳能电池柔性不锈钢衬底[J]. 光学精密工程, 2016,24(02):343-349. ZHANG K H, SHI D, LIU R ZH, et al.. Electrochemical mechanical polishing of thin film solar cell flexible stainless steel substrate[J]. Opt. Precision Eng., 2016, 24(02):343-349. (in Chinese)

吴东江,范聪,刘士博,等. 激光偏移量对Hastelloy C-276/316L焊缝腐蚀性能的影响[J]. 稀有金属材料与工程, 2015,44(02):498-502. WU D J, FAN C, LIU SH B, et al.. Effects of Laser Offset on the Corrosion Performance of Hastelloy C-276/316L Weld. Rare Metal Materials and Engineering, 2015, 44(02):498-502.

SHARMA S, TAIWADE R V, VASHISHTHA H. Effect of continuous and pulsed current gas tungsten arc welding on dissimilar weldments between hastelloy C-276/AISI 321 Austenitic stainless steel[J]. Journal of Materials Engineering and Performance, 2017,26(3):1146-1157.

WANG W, LU Y H, DING X F, et al. Microstructures and microhardness at fusion boundary of 316 stainless steel/Inconel 182 dissimilar welding[J]. Materials Characterization, 2015, 107:255-261.

HOSSEINI H S, SHAMANIAN M, KERMANPUR A. Characterization of microstructures and mechanical properties of Inconel 617/310 stainless steel dissimilar welds[J]. Materials Characterization, 2011, 62:425-431.

NAFFAKH H, SHAMANIAN M, ASHRAFIZADEH F. Dissimilar welding of AISI 310 austenitic stainless steel to nickel-based alloy Inconel 657[J]. Journal of Materials Processing Technology, 2009, 209(7):3628-3639.

LI G, HUANG J, WU Y X. An investigation on microstructure and properties of dissimilar welded Inconel 625 and SUS 304 using high-power CO2 laser[J]. International Journal of Advanced Manufacturing Technology, 2015, 76:1203-1214.

吴东江,董金飞,柴东升,等. 激光能量偏移对304/C-276异质焊缝元素分布和力学性能的影响[J]. 中国有色金属学报, 2015,25(01):15-22. WU D J, DNG J F,CHAI D SH, et al.. Effects of laser energy offset on element distribution and mechanical properties of 304/C-276 dissimilar weld[J]. The Chinese Journal of Nonferrous Metals. 2015, 25(01):15-22.

ZHOU S Y, MA G Y, CHAI D SH, et al. Nickel-based alloy/austenitic stainless steel dissimilar weld properties prediction on asymmetric distribution of laser energy[J]. Optics & Laser Technology, 2016, 81:33-39.

ZHOU S Y, CHAI D S, YU J L, et al.. Microstructure characteristic and mechanical property of pulsed laser lap-welded nickel-based superalloy and stainless steel[J]. Journal of Manufacturing Processes. 2017, 25:220-226.

吴东江,王占宏,马广义,等. 脉冲激光焊接Hastelloy C-276合金的熔池流动传热特性分析[J]. 光学精密工程, 2012,20(03):534-540. WU D J, WANG ZH H, Ma G Y, et al.. Analysis of fluid flow and hear transfer in weld pool during pulsed laser welding Hastelloy C-276[J]. Optics and Precision Engineering, 2012(03):534-540. (in Chinese)

TORKAMANY M J, SABBAGHZADEH J, HAMEDI M J. Effect of laser welding mode on the microstructure and mechanical performance of dissimilar laser spot welds between low carbon and austenitic stainless steels[J]. Materials & Design, 2012, 34:666-672.

CUI Y, XU C L, HAN Q. Effect of ultrasonic vibration on unmixed zone formation[J]. Scripta Materialia, 2006, 55:975-978.

WANG J F, YANG L J, SUN M SH, et al.. Effect of energy input on the microstructure and properties of butt joints in DP1000 steel laser welding[J]. Materials & Design, 2016, 90:642-649.

CIESLAK M J, HEADLEY T J, ROMIG A D. The welding metallurgy of HASTELLOY alloys C-4, C-22, and C-276[J]. Metallurgical Transactions A, 1986, 17(11):2035-2047.

LU Y L, PIKE L M, BROOKS C R, et al.. Strengthening domains in a Ni-21Cr-17Mo alloy[J]. Scripta Materials. 2007, 56:121-124.

CHEN S C, HUANG J C. Lap shear and T peel strength of overlap joints of superplastic 8090 AI-Li sheets bonded by electron beam and laser beam welding[J]. Materials Science and Technology, 1997, 2(13):143-155.

浏览量

390

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

中间层法钛/钢层合板激光熔覆制备及性能

压力传感器波纹膜片低应力激光焊接工艺

选区激光熔化成形W-Ni-Cu的成形工艺及热物理性能

激光熔覆原位自生Ti-Al-Si复合涂层的微观组织和高温抗氧化性能

大功率盘形激光焊焊缝背面宽度预测