摘要
对原态6061铝合金薄板进行了退火和深冷处理,通过拉伸、硬度和冲剪等实验,分析了退火和深冷处理对材料性能的影响。结果表明:采用均匀化退火加不同深冷处理的方法可改善断面光洁度,减小毛刺发生或降低毛刺高度;随着深冷时间增加,强度总体降低,而塑性总体增强,从深冷状态返回室温后强度有所回升,毛刺发生率降低且光亮带先增后减;深冷处理8h后保持深冷状态在线冲剪所得断面质量(塌角、光亮带以及毛刺)综合性能最好,若以降低毛刺高度为主要目标,则8h深冷后返回室温冲剪效果较佳。
6062 aluminum alloy is annealed,and then is treated by deep cryogenic temperature at different time.Through stretching,hardness measurement and punch-shearing experiments,the effect of cryogenic temperature on the material properties is analyzed.The results show that the mean annealing and cryogenic temperature at different time can improve the smooth zone and reduce burr or reduce burr height.With the increase in cryogenic time,the intensity is reduced,however,the plasticity is improved. While,the temperature returns from cryogenic to normal the intensity increases step by step,and the burrs are reduced and smooth zone increases and then decreases.The tests were treated by deep cryogenic temperature for 8 hand kept real-time cryogenic temperature,and punch-shearing was carried out and comprehensive quality,such as collapse angle,burr and smooth zone,is best.If the target is to reduce the burr,after 8 hcryogenic treatment and return to room temperature,the result of real-time punch shearing is better.
作者
胡志清
颜庭旭
李洪杰
吕振华
廖伟
刘庚
HU Zhi-qing1,2 ,YAN Ting-xu3, LI Hong-jie3, LYU Zhen-hua3, LIAO Wei3 ,LIU Geng3(1. Roll Forging Research Institute, Jilin University, Changchun 130022, China ; 2. Key Labvratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022, China ; 3. College of Materials Science and Engineering, Jilin University, Changchun 130022, China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2018年第5期1524-1530,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51275201
51311130129)
吉林省重点科技攻关项目(20140204062GX)
关键词
材料合成与加工工艺
6061铝合金
退火处理
在线深冷处理
冲剪成形
materials synthesis and processing technology
6061 aluminum alloy
annealing treatment
deep cryogenic treatment（DCT）
punch shearing
