摘要
研究了不同固溶温度和时效时间对半固态注射成形石墨烯增强镁基复合材料组织及性能的影响。结果表明,随着固溶温度升高,复合材料硬度(HV)逐渐减小,在200℃时复合材料硬度最高;β-Mg17Al12相含量先增大后减少,在400℃时几乎全部消失。随着时效时间增加,复合材料硬度(HV)先增加后减少,在时效12h时达到最大,为93.17。经过固溶处理和时效处理后石墨烯在复合材料基体中稳定存在,且对复合材料的硬度产生影响。
The effects of different solution temperature and different aging time were investigated on the structure and properties of graphene reinforced magnesium matrix composites prepared by thixmolding process.The results reveal that hardness of the composites gradually is decreased as the solution temperature increases.The composite reaches the maximum hardness at 200℃regardless of air cooling or water cooling.Meanwhile,the content ofβ-Mg17Al12 phase is increased firstly and then decreased,and theβphase almost disappears at 400℃.As the aging time increases,the hardness of the composites is firstly increased and then decreased,reaching a maximum of 93.17 HV at the aging time of 12 h.After solution treatment and aging treatment,the graphene exists stably in the matrix of the composites,affecting the hardness of the composites.
作者
景舰辉
陈利文
孙晓平
赵宇宏
李沐奚
李利民
侯华
Jing Jianhui;Chen Liwen;Sun Xiaoping;Zhao Yuhong;Li Muxi;Li Limin;Hou Hua(School of Materials Science and Engineering,North University of China)
出处
《特种铸造及有色合金》
CAS
北大核心
2021年第1期47-50,共4页
Special Casting & Nonferrous Alloys
基金
山西省科技重大专项资助项目(20181101014,20191102008,20191102007)
国家自然科学基金资助项目(22008224,51774254,51774253,51701187,51674226,51804279,51801189)
山西省平台基地和人才专项资助项目(201805D211036)
中央引导地方科技发展专项资金资助项目(YDZX20191400002796)
山西省科技成果转化引导专项资助项目(201804D131039)
装备预研领域基金重点资助项目(61409230407)
山西省青年科技研究基金资助项目(201801D221152)
山西省研究生教育创新资助项目(2020SY354)。
关键词
镁基复合材料
固溶温度
时效时间
硬度
石墨烯
Magnesium-based Composites
Solid Solution Temperature
Aging Time
Hardness
Graphene
