刘文义

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

利用Gleeble-3500型热模拟机对轧制态7085铝合金以不同升温速率进行加热处理，采用光学显微镜、X射线衍射仪和维氏硬度计等，研究了升温速率对合金显微组织和硬度的影响。结果表明：轧制态7085铝合金主要由α-Al基体和MgZn_2相组成；以0.5～10℃/s的升温速率加热到300℃时，基体组织发生回复，MgZn_2相未有明显变化；以0.5℃/s和1℃/s的升温速率加热到450℃时，基体组织发生再结晶，MgZn_2相逐渐溶入α-Al基体，合金硬度随着加热温度的升高逐渐增大；以5℃/s和10℃/s的升温速率加热到450℃时，回复组织和再结晶组织共存，MgZn_2相未完全溶入α-Al基体，合金硬度随着加热温度的升高先减小再增大。

关键词(KeyWords)： 7085铝合金;升温速率;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省科技计划一般项目-工业领域(2021GY-222);; 陕西省教育厅专项科学研究计划项目(18JK0158)

作者(Author): 刘文义

DOI: 10.13289/j.issn.1009-6264.2022-0049

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