自动化与信息工程2025，Vol.46Issue(4)：51-62,12.DOI:10.12475/aie.20250407
热处理对沉积态纳米TiC/7034复合材料组织性能的影响
Effect of Heat Treatment on Microstructure and Properties of As-deposited Nano-TiC/7034 Composite Materials
摘要
Abstract
Nano-TiC particle-reinforced 7034 aluminum matrix composites exhibit high strength,high hardness,and low density,making them promising lightweight materials.However,the high content of low-boiling-point elements(Zn,Mg)in 7034 aluminum alloy leads to boiling and evaporation in the high-temperature molten pool,resulting in defects such as pores and cracks,which degrade mechanical properties.To address this,a swing laser-arc hybrid additive manufacturing process was employed to fabricate nano-TiC-reinforced 7034 aluminum matrix composites.The effects of solution treatment and solution-aging treatment on microstructure and mechanical properties were investigated.The results indicate that solution treatment promotes the dissolution of MgZn₂ phases.Subsequent aging treatment after solution treatment leads to a more uniform distribution and finer size of secondary phases,increasing the ultimate tensile strength to 569.83 MPa with an elongation of 1.44%.By optimizing the solution temperature and aging process,the tensile strength of the composite was improved by 70%.关键词
纳米TiC颗粒/7034铝基复合材料/激光-电弧复合增材制造/固溶时效处理/热处理Key words
nano-TiC particles/7034 aluminum matrix composites/laser-arc hybrid additive manufacturing/solution-aging treatment/heat treatment分类
矿业与冶金引用本文复制引用
王勇,何承昊,米高阳,洪春权,郑凛..热处理对沉积态纳米TiC/7034复合材料组织性能的影响[J].自动化与信息工程,2025,46(4):51-62,12.基金项目
国家重点研发计划(2023YFB4606300) （2023YFB4606300）
