Softening Mechanism in Heat Affected Zone of 2519 High Strength Al-Cu Alloy

摘要：

　　With the thermal simulated technique,the softening mechanism in heat affected zone (HAZ) of 2519 Al-Cu Alloy is studied.The results show that over aging of the precipitates leads θ to the softening of HAZ.With the thermal cycling peak temperature increasing,the dimension of precipitates become coarse and the amount is reduced,therefore the strength and the hardness decreased.When the peak temperature is 476℃,the strength and the hardness are the lowest.With the peak temperature keeps on increasing,small part precipitates continue to grow.Most of fine needle-like θ phases dissolve and separate out renewably,which is the reason that the strength and hardness are gradually enhanced.

关键词： Al-Cu alloy Heat affected zone Thermal cycle curve Precipitate

作者: Chenggang Yang Qiang Zheng Zhijiang Huang Weiping Xu

作者单位: National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University, Nanchang 330063, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 387-391

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）