Optimization of a High-strength and Toughness Aluminium Alloy Semi-continuous Casting Process Based on an Integrated Computing Platform
Author of the article:ZHANG Zengshuo 1 , HE Shengping 2 , ZHAN Lei 3 , WANG Xinzhang 2 , WANG Xiannian 2 , WANG Yishan 1 ,
Author's Workplace：1. Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; 2. SDIC Ningxia Qingtongxia New Material Co., Ltd., Qingtongxia 751603, China; 3. SPIC Aluminum & Power Investment Co., Ltd., Yinchuan 750003, China; 4. Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
Key Words： 7050 aluminium alloy; semicontinuous casting; integrated computational materials engineering; process optimization
Abstract：
Based on the idea of integrated computational materials engineering(ICME), the process of preparing 7050 aluminium alloy ingots with a diameter of 254 mm by semi-continuous casting was optimized by using a digital integrated computing platform, ProCAST simulation software and MATLAB numerical analysis software, and the sequential (step by step) quadratic programming method(SQP) as the optimization method. The optimum casting temperature is 690 ℃, at which the residual stress in the ingot is the lowest. Compared with the traditional optimization method of adjusting the process parameters step by step and analysing the simulation results, the efficiency of the digital integrated platform for iterative process optimization is doubled. The yield strength and tensile strength of the ingot are 218 and 336 MPa, respectively.
