CAJ | 학술논문

二元过共晶Al-5%Fe合金中的初生Al_3Fe相为粗大的针片状.微量元素Sc和Zr加入到过共晶Al-5%Fe合金中,合金的初生Al_3Fe相形貌发生显著变化.其细化作用在Sc、Zr加入量分别为0.3%和0.1%时效果较好,合金的初生Al_3Fe相转变为细小的针状、粒状和花朵状.合金的抗拉强度达到266.8MPa,提高了119.8%.讨论了Sc、Zr联合添加对过共晶Al-5%Fe合金初生Al_3Fe相的作用机理.
이원과공정Al-5%Fe합금중적초생Al_3Fe상위조대적침편상.미량원소Sc화Zr가입도과공정Al-5%Fe합금중,합금적초생Al_3Fe상형모발생현저변화.기세화작용재Sc、Zr가입량분별위0.3%화0.1%시효과교호,합금적초생Al_3Fe상전변위세소적침상、립상화화타상.합금적항랍강도체도266.8MPa,제고료119.8%.토론료Sc、Zr연합첨가대과공정Al-5%Fe합금초생Al_3Fe상적작용궤리.
The primary Al_3Fe phase of the binary Al-5%Fe alloy is mainly coarse needles in shape. When the trace elements of Sc and Zr are added into the hypereutectic Al-5% Fe alloy, the morphologies of the primary Al_3Fe phase are obviously modified. Its modification result was better when 0.3% Sc and 0.1%Zr were simultaneously added to the Al-5%Fe alloy. The primary Al_3Fe phase was changed from the shape of coarse needles to be fine needle-like, particle-like and flower-like. The tensile strength of the alloy approached to 266.8 MPa, being raised 119.8%. And the mechanism of combination of minor Sc and Zr modifying the primary Al_3Fe phase of the hypereutectic Al-5%Fe alloy was discussed.