摘要
利用铸造搅拌法制取了由Al2O3颗粒增强的Al-Si合金复合材料。通过正文试验,探讨了Al2O3颗粒的尺寸、颗粒的体积分数与浇注温度对Al2O3颗粒-Al-Si复合材料组织和性能的影响。结果表明:当Al2O3,颗粒尺寸为1-3m、体积分数15-20%,浇注温度为800℃时增强效果最佳,强度可提高20%以上,磨损量可减少60%-70%,Al2O3颗粒能促进Si相形核、有碎化共晶硅并使之细化的作用。
Agitation method is used to produced Al2O3 particle reinbrce Al-Si composite. The effects ofAl2O3 particle size, volume and pouring temperature on microstructure and mechanic properties of Al2O3reinforced Al-Si composite have been studied. The results show that the beg parameters are particles with size l-3μm,volume 15-20%and pouring at 800℃,under these conditions,tensilsength of the composite increasesmore than 20%and wearing weight loss decreases 60-70%,the Al2O3 partldes can also promote the nucleationof primary Si and refine the euectic Si,
出处
《铸造技术》
CAS
北大核心
1995年第6期44-46,共3页
Foundry Technology