摘要
对Al-3.5Cu-2.0Mg-1.0Mn-0.3Y合金进行了不同温度和时间的固溶处理,再进行185℃×8 h的时效处理试验。采用OM、硬度测试等手段研究了Al-3.5Cu-2.0Mg-1.0Mn-0.3Y合金的最佳固溶处理工艺。结果表明:随着固溶温度的升高和固溶时间的增加,Al-3.5Cu-2.0Mg-1.0Mn-0.3Y合金中第二相越来越多的溶入基体,合金晶粒尺寸也逐渐增大,495℃×6 h固溶处理的合金中第二相基本完全溶入基体。经495℃×6 h固溶+185℃×8 h时效处理的Al-3.5Cu-2.0Mg-1.0Mn-0.3Y合金的硬度达到最大值,为141 HB。Al-3.5Cu-2.0Mg-1.0Mn-0.3Y合金的最佳固溶工艺为495℃×6 h。
Al-3.5Cu-2.0Mg-1.0Mn-0.3Y alloy was treated with solution at different temperatures and time,and then aged at 185℃×8 h.The optimal solution treatment technology of the alloy was studied by OM and hardness test.The results show that with the increase of solution temperature and solution time,the second phase of Al-3.5Cu-2.0Mg-1.0Mn-0.3Y alloy is dissolved into the matrix more and more,and the grain size of the alloy is gradually increased.The second phase of Al-3.5Cu-2.0Mg-1.0Mn-0.3Y alloy is basically dissolved into the matrix at 495℃×6 h.The maximum hardness of the alloy after solution at 495℃×6 h and aging at 185℃×8 h is 141 HB.The optimal solution process of the alloy is 495℃×6 h.
作者
丁海萍
童一飞
DING Haiping;TONG Yifei(School of Mechanical Engineering,Nantong Vocational University,Nantong 226007,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210014,China)
出处
《热加工工艺》
北大核心
2024年第18期44-46,51,共4页
Hot Working Technology
基金
江苏省自然科学基金项目(BK2012475)。
