W6高速钢/16Mn钢电子束焊接接头组织及性能分析
Study on microstructure and properties of W6 high speed steel/16Mn electron beam welded joint
-
摘要: 高速钢作为一种高硬度、高耐磨性和高耐热性特殊工具钢，应用于刀具、模具及特殊结构件上时，往往需要结合异种钢使用. 但高速钢焊接工艺研究仍不成熟，焊接中产生的裂纹与碳化物缺陷是制约高速钢应用的主要因素. 文中通过对W6Mo5Cr4V2高速钢与16Mn钢预置镍填充层后进行电子束焊接. 结果表明，镍中间层的引入有效的抑制了高速钢侧热影响区的开裂，接头呈不对称“漏斗形”. 焊缝组织主要由镍基固溶体与少量M2C碳化物构成，焊缝中无马氏体组织，其焊缝平均硬度为185 HV；接头抗拉强度达到378 MPa，为16Mn侧母材抗拉强度的75%. 拉伸断口断裂于距W6侧熔合线0.8 mm处的热影响区，为准解理断裂.
-
关键词:
- 高速钢|电子束焊接|碳化物|镍填充层
Abstract: As a tool steel with high hardness, high wear resistance and high heat resistance, high speed steel often needs to be combined with dissimilar steel when applied to cutting tools, dies and special structural parts. However, the research on the welding process of high speed steel is still immature and the cracks and carbide defects in the welding are the main restrict factors of the application of high speed steel. In this paper, the electron beam welding of W6Mo5Cr4V2 high speed steel and 16Mn steel preplaced Ni intermediate layer effectively restrained the cracking of the heat affected zone of high speed steel side. The results showed that the joint was asymmetrical "funnel shape". The microstructure of the weld zone was mainly composed of nickel based solid solution and a small amount of M2C carbide. The plastic deformation ability of the weld was increased and the hardness of the weld reduced, which was 185 HV. The tensile strength with no defect joint was 378 MPa, which was 75% of the tensile strength of the 16Mn side. The tensile fracture occureed at the heat affected zone at 0.8 mm of the fusion line at the W6 side, and the fracture form was a quasi cleavage fracture with a certain plastic deformation. -
-
[1] 熊 缨, 姚建华. 高速钢与弹簧钢的激光焊接研究[J]. 应用激光, 2002, 22(2): 209 ? 212
Xiong Ying, Yao Jianhua. Study on laser welding of high speed steel and spring steel[J]. Applied Laser, 2002, 22(2): 209 ? 212[2] Boccalini M, Goldenstein H. Solidification of high speed steels[J]. International Materials Reviews, 2001, 46(2): 92 ? 115. [3] 顾锡峰, 莫胜功. 45钢/W6Mo5Cr4V2高速钢刀具的摩擦焊接研究[J]. 青海大学学报(自然科学版), 2009, 27(1): 32 ? 34
Gu Xifeng, Mo Shenggong. Friction welding of 45 steel / W6Mo5Cr4V2 high speed steel cutting tools[J]. Journal of Qinghai University (Natural Science Edition), 2009, 27(1): 32 ? 34[4] Wanqun H, Yajiang L, Juan W, et al. Element distribution and phase constitution of Al2O3–TiC/W18Cr4V vacuum diffusion bonded joint[J]. Vacuum, 2010, 85(2): 327 ? 331. [5] 徐 慨. YG12硬质合金与W18Cr4V钢钎焊工艺及机理研究[D]. 哈尔滨: 哈尔滨工业大学, 2014. [6] 杨全毅. 异种金属M42高速钢与X32高强度钢激光焊接行为研究[D]. 长沙: 湖南大学, 2013. [7] 刘 欢. M42/X32双金属带锯电子束焊接温度场模拟及热处理工艺研究[D]. 武汉: 中南大学, 2013. [8] 刘鸽平, 黄春平, 柯黎明, 等. 工艺参数对铜/钢搅拌摩擦焊焊缝成形的影响[J]. 热加工工艺, 2011, 40(23): 130 ? 132
Liu Geping, Huang Chunping, Ke Liming, et al. Effect of process parameters on weld formation of friction stir welding of copper / steel[J]. Hot Working Technology, 2011, 40(23): 130 ? 132[9] 马 婧, 赵子华, 聂宝华, 等. TC21钛合金电子束焊接接头超高周疲劳行为研究[J]. 机械工程学报, 2015, 51(12): 69 ? 75
Ma Jing, Zhao Zihua, Nie Baohua, et al. Ultra high cycle fatigue behavior of TC21 titanium alloy welded by electron beam welding[J]. Journal of Mechanical Engineering, 2015, 51(12): 69 ? 75[10] 王 廷, 张秉刚, 张艳桥, 等. 添加QCr0.8阻隔层的钛/钢电子束焊接接头组织与性能[J]. 稀有金属材料与工程, 2014(5): 1209 ? 1213
Wang Ting, Zhang Binggang, Zhang Yanqiao, et al. Microstructure and properties of titanium / steel electron beam welded joints with QCr0.8 barrier layer[J]. Rare Metal Materials and Engineering, 2014(5): 1209 ? 1213 -
期刊类型引用(3)
1. 王颖，高胜，戴哲. 基于CNN-Transformer混合网络的焊缝激光条纹分割. 中国激光. 2024(24): 113-124 . 
百度学术
2. 乐猛，张华，叶艳辉，尚志军，赵琪. 膜式壁焊缝图像处理及其识别方法. 热加工工艺. 2021(01): 107-111 . 百度学术
3. 张世宽，吴清潇，林智远. 焊缝图像中结构光条纹的检测与分割. 光学学报. 2021(05): 88-96 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 782
- HTML全文浏览量: 62
- PDF下载量: 1
- 被引次数: 4
下载:
