界面涂层对厚规格热轧钢/铝复合板界面结构与力学性能的影响

doi:10.3901/JME.2019.14.030

机械工程学报 ›› 2019, Vol. 55 ›› Issue (14): 30-36.doi: 10.3901/JME.2019.14.030

界面涂层对厚规格热轧钢/铝复合板界面结构与力学性能的影响

黄华贵, 赵阳, 王超, 燕猛

燕山大学国家冷轧板带装备及工艺技术工程研究中心秦皇岛 066004

收稿日期:2018-12-10 修回日期:2019-03-28 出版日期:2019-07-20 发布日期:2019-07-20
作者简介:黄华贵,男,1978年出生,教授,博士研究生导师。主要研究方向为层状复合材料开发及应用。E-mail:hhg@ysu.edu.cn;赵阳,男,1992年出生,硕士研究生。主要研究方向为界面涂层对厚规格钢/铝复合板热轧界面结构与力学性能的影响。E-mail:1147185955@qq.com;王超,男,1996年出生,硕士研究生。主要研究方向为钢/铝复合材料轧制复合尺寸效应研究。E-mail:1611903177@qq.com;燕猛,男,1987年出生,讲师。主要研究方向为复合材料制备工艺研究。E-mail:yanmysu@163.com
基金资助:
国家自然科学基金（51474189）和河北省自然科学基金杰出青年基金（E2018203446）资助项目。

Influence of Plasma Spraying on Interfacial Microstructure and Mechanical Property of Thick Steel/Aluminum Laminated Plate by Hot Rolling

HUANG Huagui, ZHAO Yang, WANG Chao, YAN Meng

National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004

Received:2018-12-10 Revised:2019-03-28 Online:2019-07-20 Published:2019-07-20

摘要/Abstract

摘要： 针对厚规格钢/铝复合板坯料厚度大、组元差异显著、难以直接轧制复合等特点，采用等离子涂覆技术与热轧复合工艺相结合成功制备了厚规格钢/铝复合板，通过结合界面剪切强度测试和SEM、EDS等检测方法，分别探究了轧制道次、温度与压下率对界面结构与力学性能的影响规律。结果表明，与直接轧制复合相比，经表面喷涂处理后的界面结合强度明显提高，且拉剪断裂面均位于钢与涂层界面。在单道次轧制条件下，随着轧制压下率增加，钢/涂层的微观界面得到改善，界面结合强度逐渐提高。在400~500℃范围内，钢/铝界面扩散层厚度随轧制温度提高呈增加趋势、界面结合强度先增大后减小。由于变形的不协调性，增加轧制道次会破坏前一道次界面复合结果，导致结合强度剧烈下降。当轧制温度为450℃、单道次压下率为40%时，钢/铝复合板界面剪切强度达66 MPa，符合相关标准要求。研究成果为厚规格钢/铝复合板生产制备提供了一种新途径。

关键词: 等离子喷涂, 厚规格钢/铝复合板, 力学性能, 热轧复合工艺, 微观组织

Abstract: It is difficult to fabricate thick steel/aluminum laminated plate directly by existing rolling process because of the large thickness and obvious difference of characteristics between steel and aluminum. Plasma coating technology and hot rolling process are combined to prepare thick steel/aluminum plate successfully. The effects of rolling pass, temperature and reduction on interfacial bonding characteristics and mechanical properties of steel/aluminum plate qere investigated by the interface shear strength test and SEM, EDS. The results show that the interface bond strength after treatment of plasma spraying is significantly improved compared with direct rolling, and the shear fracture surface is located at the steel/coating interface. Under the condition of single pass rolling, with the rolling reduction increases, the micro-interface of the steel/coating is improved, and the bonding strength of the steel/aluminum plate is gradually improved. In the range of 400℃ to 500℃, the thickness of the steel/aluminum interface diffusion layer increases with the increase of rolling temperature generally, and the bonding strength first increases and then decreases. Due to the uncoordinated deformation, increasing the rolling pass will destroy the bonding effect previously, resulting in a sharp decrease of bonding strength. The steel/aluminum plate has an interface shear strength of 66 MPa when the rolling temperature is 450℃ and the single pass reduction is 40%, which comply with the relevant. Research results provide a new way for the production of thick steel/aluminum plate.

Key words: hot rolling process, mechanical property, micro-interface, plasma spraying, thick steel/aluminum laminated plate

中图分类号:

TG142

黄华贵, 赵阳, 王超, 燕猛. 界面涂层对厚规格热轧钢/铝复合板界面结构与力学性能的影响[J]. 机械工程学报, 2019, 55(14): 30-36.

HUANG Huagui, ZHAO Yang, WANG Chao, YAN Meng. Influence of Plasma Spraying on Interfacial Microstructure and Mechanical Property of Thick Steel/Aluminum Laminated Plate by Hot Rolling[J]. Journal of Mechanical Engineering, 2019, 55(14): 30-36.

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界面涂层对厚规格热轧钢/铝复合板界面结构与力学性能的影响

Influence of Plasma Spraying on Interfacial Microstructure and Mechanical Property of Thick Steel/Aluminum Laminated Plate by Hot Rolling

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