2B70铝合金挤压棒材生产工艺试验研究  

Experimental research on the production technology of 2B70 Al-alloy extrusion rod

作　　者：刘科研[1] 徐晨光[1] 高鑫欣 王京华[1] 陈雷[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2017年第6期38-40,62,共4页Light Alloy Fabrication Technology

摘　　要：通过力学性能测试、光学显微镜观察、低倍组织检验等方法,研究了淬火、时效、正反向挤压工艺对2B70铝合金挤压棒材的组织和性能的影响,确定了2B70铝合金挤压棒材的最佳生产工艺:采用反向挤压工艺可控制低倍粗晶现象;最佳固溶温度530℃、保温时间4 h,水淬;最佳时效温度190℃,保温时间20 h。Mechanical property test, optical metallographic microstructure observation and macrostructure inspection were conducted to investigate how quenching, aging, forward and backward extrusion influence the microstructure and properties of 2B70 Al-alloy extrusion rod. Then the optimal production technology was determined as followed. Backward extru- sion was chosen to avoid macro coarse grain. The optimal solution temperature and holding time （water quenching ）, ageing temperature and holding time were 530℃ 4 h and 190℃ 20 h.

关 键 词：2B70铝合金 反向挤压棒材 淬火 时效 

分 类 号：TG379[金属学及工艺—金属压力加工]