王琳,孙昱,薄琳,左敏,赵德刚.不同熔体热处理工艺后Al-Cu-Ti合金的晶粒细化及力学性能改善[J].稀有金属材料与工程,2020,49(8):2615~2622.[Wang Lin,Sun Yu,Bo Lin,Zuo Min,Zhao Degang.Grain refinement and mechanical properties of Al-Cu-Ti alloys after different melt heat treatment processes[J].Rare Metal Materials and Engineering,2020,49(8):2615~2622.]
不同熔体热处理工艺后Al-Cu-Ti合金的晶粒细化及力学性能改善
投稿时间:2019-05-24  修订日期:2019-08-18
中文关键词:  熔体热处理工艺  熔体结构  凝固组织  晶粒细化  力学性能
基金项目:国家自然科学基金项目(Grants Nos. 51772132);山东省自然科学基金(ZR2019MEM019)
中文摘要:
      本文研究了添加细化剂和不同热处理工艺(过热处理和热速处理)对Al-Cu合金的改性。分析了Al-Cu-Ti合金的相组成、凝固微观组织和力学性能。此外,采用差示扫描量热法(DSC)研究了Al-Cu-Ti合金在不同熔体热处理工艺后的熔体结构转变行为。实验结果表明,热速处理极大地细化了Al-Cu-Ti合金晶粒,且力学性能得到有效改善。通过对热力学相变分析,发现Al-Cu-Ti合金经过热处理和热速处理后的熔化潜热随着界面能的增大而变小,从而在一定程度上细化了合金的微观组织。
Grain refinement and mechanical properties of Al-Cu-Ti alloys after different melt heat treatment processes
英文关键词:Melt heat treatment process  Melt structure  Solidification structure  Grain Refinement  Mechanical properties
英文摘要:
      In this study, the modification of Al-Cu alloy by adding grain refiner combined with different heat treatments (superheat treatment and thermal rate treatment) is investigated. The phase composition, solidification microstructure and mechanical properties of Al-Cu-Ti alloys are analyzed. Moreover, the melt structure transformation of Al-Cu-Ti alloys after different melt heat treatments was studied by DSC. The experimental results showed that the thermal rate treatment greatly refined the grain of Al-Cu-Ti alloy and improved the mechanical properties. Through the analysis of thermodynamic phase transition, it was found that the latent heat of fusion of Al-Cu-Ti alloy after superheat treatment and thermal rate treatment became smaller due to the increase of interfacial energy, which leads to refine the microstructure of alloy to some extent.
作者单位E-mail
王琳 济南大学 wanglin13189@163.com 
孙昱 济南大学 1395142973@qq.com 
薄琳 济南大学 bling828@163.com 
左敏 济南大学 zuomin@g.ucla.edu 
赵德刚 济南大学 mse_zhaodg@ujn.edu.cn 
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