摘要
采用固溶处理,研究CDS制备过共晶Al-18Si合金中初生Si相与共晶Si相形貌的变化。结果表明,随着固溶温度的升高和固溶时间的延长,初生Si相平均尺寸显著减小,经570℃×6h固溶后,合金中初生Si相尺寸为20.78μm;共晶Si的变化趋势和初生Si相似,均由针状逐渐粒化为近球状,经570℃×6h固溶后,合金中共晶Si尺寸为5.44μm,且分布趋向均匀。
Effects of solution treatment on the evolution of microstructure of primary Si and eutectic Si in Al-18 Si alloy prepared by CDS were investigated.The results show that the average size of primary Si in Al-18 Si is decreased significantly with the increase of temperature and time,where primary Si size reaches 20.78μm at 570℃for 6 hsolution treatment.The eutectic Si is also refined from acicular structure to near-spheroidization with increasing in temperature and time,where the average size of eutectic Si phase is decreased from 25.57μm to 5.44μm with more uniform distribution.
作者
于珂璐
李元东
周宏伟
陈天赐
孙延蓝
马颖
Yu Kelu;Li Yuandong;Zhou Hongwei;Chen Tianci;Sun Yanlan;Ma Ying(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology;Key Laboratory of Non-ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2018年第4期445-448,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51464031
51064017)
