45号钢/304不锈钢复合管坯铸造工艺研究  

Casting Process of 45#Steel/304 Stainless Steel Compound Pipe Billet

作　　者：马严 刘富宇 高朋敏[1] 宋波[1] 贾品峰[1] MA Yan;LIU Fuyu;GAO Pengmin;SONG Bo;JIA Pinfeng(College of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051)

机构地区：[1]辽宁科技大学材料与冶金学院,鞍山114051

出　　处：《特种铸造及有色合金》2025年第2期241-244,共4页Special Casting & Nonferrous Alloys

基　　金：2024辽宁科技大学国家级大学生创新创业训练项目(202410146036)。

摘　　要：采用液-固复合法,分别在1560、1590和1620℃的浇注温度下制备了45号钢/304不锈钢复合管坯,对复合坯进行断面金相显微镜和扫描电镜观察,并进行剪切强度检测。结果表明,45号钢和304不锈钢复合界面存在元素扩散区,浇注温度越高,Cr和Ni元素扩散区增大。SEM观察显示,3种复合材料均存在一定厚度的复合层,且随着浇注温度提升,复合层的元素分布越复杂,元素扩散越明显。1560、1590和1620℃时,复合界面的剪切强度分别为248、262和285 MPa,说明复合材料的剪切强度随着浇注温度的提升而升高。The compound tube billet of 45 steel/304 stainless steel was prepared under 1560,1590 and 1620℃by liquid-solid composite method.The cross-section composites were observed by OM and SEM,and shear strength was tested.The results domestrate that there exists an element diffusion zone at compound interface of 45 steel and 304 stainless steel,and the diffusion zone of Cr and Ni elements is increased with the increase of pouring temperature.SEM observation reveals that compound layers with a certain thickness are generated in all composites.The element distribu⁃tion becomes more complicated with the increase of pouring temperature,and the element diffusion is obvious.The shear strength of compound interface is 248,262 and 285 MPa at 1560,1590,and 1620℃,respectively,indicating the enhancement of shear strength with the increase of pouring temperature.

关 键 词：复合材料 浇注温度 剪切强度 金相组织 双金属 

分 类 号：TB331[一般工业技术—材料科学与工程]