采用KBF4 和K2TiF6 混合盐反应工艺原位合成制备了TiB2 颗粒增强AlSi7Mg0.6合金(TiB2/AlSi7Mg0.6)复合材料,并进行了固溶和时效处理; 用光学显微镜、透射电镜和硬度仪对复合材料的显微组织及热处理强化后的性能进行了研究。结果表明: TiB2 颗粒显著细化了复合材料的显微组织; 固溶处理后复合材料达到硬度峰值的时效时间较基体合金缩短, 峰值硬度提高幅度小于基体合金的; 复合材料中铝基体晶粒细小、晶界面积大, 导致时效强化相在晶内的析出量不足, 是复合材料时效硬度提高幅度下降的主要原因。
所属栏目
试验研究国家高技术研究发展计划项目(2006AA03Z568)
收稿日期
2013/7/192014/4/14
作者单位
武晓霞:中原工学院材料与化工学院, 郑州 450007
郭建:中原工学院材料与化工学院, 郑州 450007
牛济泰:中原工学院材料与化工学院, 郑州 450007
杨顺成:郑州正机协合能源装备科技有限公司, 郑州 450052
备注
武晓霞(1985-), 女, 河南开封人, 硕士研究生。
引用该论文:
WU Xiao-xia,GUO Jian,NIU Ji-tai,YANG Shun-cheng.Heat Treatment Strengthening for TiB2/AlSi7Mg0.6 Composite[J].Materials for mechancial engineering,2014,38(9):63～66
武晓霞,郭建,牛济泰,杨顺成.TiB2/AlSi7Mg0.6复合材料的热处理强化[J].机械工程材料,2014,38(9):63～66
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