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| 10钢/35CrMnSi径向摩擦焊接头的力学性能及组织特征 |
| Mechanical Properties and Microstructure Characteristics of Radial Friction Welding Joint of 10 Steel and 35CrMnSi |
| Received:January 27, 2018 Revised:March 10, 2018 |
| DOI：10.3969/j.issn.1674-6457.2018.02.021 |
| 中文关键词: 惯性径向摩擦焊 异种金属 力学性能 显微组织 |
| 英文关键词: inertia radial friction weld dissimilar metals mechanical properties microstructure |
| 基金项目: |
| Author Name | Affiliation | | CHEN Da-jun | Southwest Institute of Technique and Engineering, Chongqing 400039, China | | LI Zhong-sheng | Southwest Institute of Technique and Engineering, Chongqing 400039, China | | ZHANG Long-ping | Southwest Institute of Technique and Engineering, Chongqing 400039, China | | DAI Ming-hui | Southwest Institute of Technique and Engineering, Chongqing 400039, China | | DAI Ye | Southwest Institute of Technique and Engineering, Chongqing 400039, China | | FU Yang-fan | Southwest Institute of Technique and Engineering, Chongqing 400039, China |
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| 中文摘要: |
| 目的 研究10钢/35CrMnSi惯性径向摩擦焊接头的力学性能和组织特征。方法 通过对10钢/35CrMnSi进行惯性径向摩擦焊接试验，采用OM、超声检测、万能材料试验机及显微硬度仪对接头的微观组织及力学性能进行表征。结果 10钢/35CrMnSi惯性径向摩擦焊接头焊合区内未发现裂纹、夹渣、未熔合等焊接缺陷，焊合率100%；接头显微硬度分布呈现出中间高两头低的特征，平均剪切强度达520 MPa，略高于10钢母材；焊接界面为明显的“锯齿状”咬和，35CrMnSi侧的热影响区由细小马氏体和少量贝氏体组织，10钢侧形成了一层具有明显金属流线的塑性变形层，靠近焊接界面的塑性变形层为厚度约150 μm的细晶区，其组织为少量马氏体和铁素体。结论 采用惯性径向摩擦焊技术实现了10钢/35CrMnSi异种金属的高强连接。 |
| 英文摘要: |
| The paper aims to study mechanical properties and microstructure characteristics of joint of 10 steel/35CrMnSi by inertia radial friction welding. The inertia radial friction welding of 10 steel/35CrMnSi was tested. Microstructure characterization and mechanical properties of welding joints were studied with OM, ultrasonic testing, universal material testing machine and micro-hardness tester. The results show that the crack, slag and incomplete fusion were not found in weld zone of inertia radial friction welding joint of 10 steel and 35CrMnSi. The bonding rate was 100%. The micro-hardness curve of welding joint was high in the middle and low at two ends. The average shear strength of the welding joints could be up to 520 MPa, which was higher than that of 10 steel base metal. There was obvious serrated bite at the welding interface. The HAZ in 35CrMnSi side was fine martensite and a few bainite. And a plastic deformation layer with obvious metal streamline was formed in 10 steel side. The plastic deformation layer near the welding interface was a fine grain region with a thickness of about 150 μm. Few martensite and ferrite of microstructure were in the fine grain region . The results show that dissimilar metals of 10 steel and 35CrMnSi can be welded with high-strength by inertia radial friction welding. |
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