Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第20卷    第7期    总第136期    2010年7月

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文章编号:1004-0609(2010)07-1309-07
小尺寸T3/35CrMnSi钢异种材料
惯性径向摩擦焊接头的特性
罗  键1, 孙 玉1, 2, 刘德佳1, 2, 吴 玮3, 徐晓菱3

(1. 重庆大学 机械传动国家重点实验室,重庆 400030;2. 重庆大学 材料科学与工程学院,重庆 400030;
3. 中国兵器工业第五九研究所,重庆 400039
)

摘 要: 针对小尺寸异种金属材料惯性径向摩擦焊接存在的困难,采用扫描电镜(SEM)、能谱分析(EDS)、显微硬度和剪切强度等测试方法,研究小尺寸T3/35CrMnSi异种材料惯性径向摩擦焊接头的特征。结果表明:在接头过渡区出现塑性变形层、动态再结晶、元素扩散互溶,实现了界面的冶金结合;接头界面塑性变形层的厚度随着主轴转速、摩擦力、顶锻力的变化而变化;当厚度约为5 μm时,界面结合质量最好;接头力学性能以及热影响区宽度的变化与塑性变形层、马氏体相变、材料物性有关;在主轴转速大于1 800 r/min、顶锻压力大于190 MPa的情况下,接头不容易出现缺陷。

 

关键字: 小尺寸T3铜;35CrMnSi钢;惯性径向摩擦焊;塑性变形;显微硬度;剪切强度

Characteristics of inertia radial friction welding joints of
small size T3/35CrMnSi dissimilar metal materials
LUO Jian1, SUN Yu1, 2, LIU De-jia1, 2, WU Wei3, XU Xiao-ling3

1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, China;
 2.College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China;
 3.No.59 Institute of China Ordnance Industry, Chongqing 400039, China

Abstract:Based on the difficulty of inertia radial friction welding small size T3/35CrMnSi dissimilar metal materials, the characteristics of joints of T3/35CrMnSi were analyzed by SEM, EDS, microhardness test and shear strength test. The results show that plastic deformation layer, dynamic recrystallization, and diffusion and dissolution of elements occur in the joint transition region, achieving metallurgical bonding. The thickness of the plastic deformation layer changes with spindle speed, friction pressure, forging pressure; when the thickness is about 5 μm, the interface quality is the best. The joint mechanical properties and the width of heat affected zone are relative to the plastic deformation layer, martensitic transformation and material properties. In the case that the spindle speed is more than 1800 r/min, the forging pressure is more than 190 MPa, the welding joints are bonded successfully and have no local spot defects.

 

Key words: small size T3 copper; 35CrMnSi steel; inertia radial friction welding; plastic deformation; microhardness; shear strength

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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