Open AccessStrengthening mechanism and thermal deformation behavior of Al-12Si/Fe piston composite
Author(s) -
Hao Yang,
Yuan Wang,
Xiuchang Wang,
Qihong Cen,
Xiaohua Yu
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab6c88
Subject(s) - materials science , amorphous solid , dynamic recrystallization , composite material , deformation (meteorology) , composite number , microstructure , hot working , crystallography , chemistry
The present paper aims the investigation on the influence of Fe based amorphous on strength of aluminum alloy (Al-12Si), and the thermal deformation behavior of new Al-12Si/Fe base amorphous composites. On this foundation, a heat flow stress model of the sample was proposed by a Zener-Hollomon parameter and microstructural studies were carried out on Al-12Si/Fe base amorphous composite by many means. Microstructural study reveals dynamic recovery and dynamic recrystallization of Al-12Si/Fe base amorphous composite at thermal compression text. In addition, the deformation activation energy of Al-12Si/Fe-based amorphous composites is as high as 211.29 kJ mol −1 , compared with Al-12Si alloy (170.51 kJ mol −1 ). Importantly, the flow stress equation of the new composite is ε ̇ = 4.42×1014 [sinh(0.0166 σ) ]6.13 exp(−211290/ RT ), and the linear regression coefficient is 0.99. This study constitutes a significant advance in strengthening the Al-12Si engine piston and controlling the thermal deformation behavior and opens new directions for the development of piston material.