摘要
通过扫描电镜/能谱、X射线衍射以及金相分析,针对几种6000系汽车板铝合金,研究了不同的合金成分对结晶相的影响.结果表明,合金铸造时形成的结晶相为Al1.9CuMg4.1Si3.3,Al8(FeMnCr)2Si,Al5(FeMnCr)Si,Al4(MnFeCr)3Si2,Al5(MnFeCr)12Si7以及Mg2Si.随Mg/Si,Mg/Cu质量比及Mn含量的增大,Mg2Si和Al(FeMnCr)Si/Al(MnFeCr)Si型结晶相数量增多.均匀化时,除发生Al5(FeMnCr)Si向Al8(FeMnCr)2Si相的转变外,其他结晶相的类型不变.在随后的固溶处理和时效过程中,结晶相不再发生变化.
By means of SEM/energy spectrum, XRD and metallographic analysis, the effects of different alloying compositions on the constituents of some 6000-series aluminium alloys for automotive body sheets were investigated. The results indicated that the phases formed in as-cast state include Al1.9CuMg4.1Si3.3, Al8（FeMnCr）2Si, Al5（FeMnCr）Si, Al4（MnFeCr）3Si2, Al5 （MnFeCr）12Si7 and Mg2Si. And the quantities of such phases as Al（FeMnCr）Si, Al（MnFeCr）Si and Mg2Si increase with the mass ratios Mg/Si and Mg/Cu and Mn content. When homogenizing the Al alloys, the types of their phases remain-unchanged except the Al5（FeMn）Si which is transformed into Al8（FeMn）2Si phase. Then, after rolling and final heat treatment, all the phases no longer change.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第11期1070-1073,共4页
Journal of Northeastern University(Natural Science)
基金
教育部科学技术研究重大项目(0208)
国家高技术研究发展计划项目(2002AA331050)
国家教育部高等学校优秀青年教师科研奖励计划项目
关键词
6000系铝合金
汽车板
结晶相
铸态
均匀化
6000-series aluminium alloys
automotive body sheets
phase constituent
as-cast
homogenization
