中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2015年
5期
1163-1167
,共5页
AlB 2-Al%原位复合材料%热轧%固溶处理%力学性能
AlB 2-Al%原位複閤材料%熱軋%固溶處理%力學性能
AlB 2-Al%원위복합재료%열알%고용처리%역학성능
AlB2-Al%in-situ composite%hot-rolling%solution treatment%mechanical property
850℃下在真空熔炼炉中通过液态铝与无定形硼粉之间的化学反应，原位合成AlB 2-Al复合材料。研究该铝基复合材料经过热轧和固溶处理后显微组织与力学性能的变化。分别利用扫描电镜(SEM)、光学电镜和X射线衍射仪(XRD)对合成复合材料的显微组织和物相组成进行分析，并采用室温下的拉伸实验确定AlB 2-Al复合材料的力学性能。结果表明：由于在铝基体中生成了高纵横比的AlB 2薄片，复合材料的硬度与抗拉强度明显高于纯铝基体的，但其塑性降低。经固溶处理后，AlB 2-Al复合材料的伸长率可达26%以上。
850℃下在真空鎔煉爐中通過液態鋁與無定形硼粉之間的化學反應，原位閤成AlB 2-Al複閤材料。研究該鋁基複閤材料經過熱軋和固溶處理後顯微組織與力學性能的變化。分彆利用掃描電鏡(SEM)、光學電鏡和X射線衍射儀(XRD)對閤成複閤材料的顯微組織和物相組成進行分析，併採用室溫下的拉伸實驗確定AlB 2-Al複閤材料的力學性能。結果錶明：由于在鋁基體中生成瞭高縱橫比的AlB 2薄片，複閤材料的硬度與抗拉彊度明顯高于純鋁基體的，但其塑性降低。經固溶處理後，AlB 2-Al複閤材料的伸長率可達26%以上。
850℃하재진공용련로중통과액태려여무정형붕분지간적화학반응，원위합성AlB 2-Al복합재료。연구해려기복합재료경과열알화고용처리후현미조직여역학성능적변화。분별이용소묘전경(SEM)、광학전경화X사선연사의(XRD)대합성복합재료적현미조직화물상조성진행분석，병채용실온하적랍신실험학정AlB 2-Al복합재료적역학성능。결과표명：유우재려기체중생성료고종횡비적AlB 2박편，복합재료적경도여항랍강도명현고우순려기체적，단기소성강저。경고용처리후，AlB 2-Al복합재료적신장솔가체26%이상。
In-situ AlB 2chemical-Al composite was synthesized by reaction between liquid aluminum andamorphous boron powder at 850℃ in vacuum melting furnace. The changes of microstructure and mechanical properties of this aluminum matrix composite after hot-rolling and solution treatment were studied. Scanning electron microscopy (SEM), optical microscopy and X-ray diffraction (XRD) were used to investigate the morphology and phase composition of the composite. The mechanical properties of AlB2-Al composite were determined by the tensile test at room temperature. The results show that the AlB2 flakes with high aspect ratio form in Al matrix, therefore, the micro-hardness and tensile strength of the composite are significantly higher than those of pure aluminum, but the ductility of matrix is reduced. And the elongations of composites can reach more than 26% after solution treatment.
