锰元素对喷射成形高强铝合金固溶组织和性能的影响季飞 蔡元华 张济山 郝斌(北京科技大学新金属材料国家重点实验室 100083)摘要:利用光镜,扫描电镜和 X 射线衍射的观察以及力学性能检测,讨论了在高强铝合金中加入锰后对合金固溶组织、拉伸性能以及断口形貌的影响
结果表明,加入锰后能使固溶温度得到提高;通过断口形貌 SEM 扫描可以看出,含锰铝合金的韧窝比不含锰铝合金要细小,在不出现粗大含锰相时,加锰后断口上沿晶断裂减小;同时在高强铝合金中添加锰元素能提高材料的屈服强度和极限抗拉强度
关键词:喷射成形;超高强铝合金;显微组织;Mn;性能分类号:Influence of Mn content on microstructure of spray-formed 7xxx series aluminum alloyJI Fei, CAI Yuan-hua, ZHANG Ji-shan, HAO Bin (State Key Laboratory of Advanced Metal Material 100083)Abstract: The affect of Mn on solution structure,tensile strength and micrographs of fracture of ultra-high strength aluminum alloys were studied by use of OP,SEM and XRD analysis
The results show that Mn element will increase solution temperature; aluminum alloy with manganese has smaller size of dimple and lower fraction of intergranual