CAJ | 학술논문

利用熔铸-原位反应喷射沉积成形技术制备了TiC颗粒增强Al-20Si-5Fe复合材料．分析了内生TiC颗粒对喷射沉积Al-20Si-5Fe合金微观组织的影响．结果表明：喷射沉积Al-20Si-5Fe合金微观组织中常出现脆性、针状的Al-Si-Fe三元金属间化合物相．在Al-20Si-5Fe合金中内生一定量的TiC颗粒，有助于减小粗晶Si颗粒的尺寸、消除针状的Al-Si-Fe三元金属间化合物相．
이용용주-원위반응분사침적성형기술제비료TiC과립증강Al-20Si-5Fe복합재료．분석료내생TiC과립대분사침적Al-20Si-5Fe합금미관조직적영향．결과표명：분사침적Al-20Si-5Fe합금미관조직중상출현취성、침상적Al-Si-Fe삼원금속간화합물상．재Al-20Si-5Fe합금중내생일정량적TiC과립，유조우감소조정Si과립적척촌、소제침상적Al-Si-Fe삼원금속간화합물상．
A TiC/Al-20Si-5Fe composite is fabricated by melt in situ reaction spray forming and effect of in situ TiC particulate on the microstructure of spray-deposited Al-20Si-5Fe alloy is studied. Both theoretical and experimental results have shown that some Al-Si-Fe intermetallic phases with needle-like structure exist in the spray-deposited Al-20Si-5Fe alloy, which is harmful to the tensile properties of the composites. The needle-like intermetallic phases can be entirely absent in the final product after 5%TiC (mass fraction) particulates are in situ formed in spray-deposited Al-20Si-5Fe alloy.