Microstructure and properties evolution of Al-17Si-2Fe alloys with addition of quasicrystal Al-Mn-Ti master alloy

• 作者: Chi-Chi Sun Hong-Mei Chen Jing Zhang Ke Li Ling Wang Ning Liu Zhao-Xia Cheng Zhou-Yi Pang
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1210-1221
• 页数: 12页
• 语种: 英文

摘要

The Fe-rich intermetallic compounds in Al17Si-2Fe were modified via Al-Mn-Ti quasicrystal master alloy.The effect of master alloy content on the Fe-rich phase morphology was studied by scanning electron microscope (SEM) and thermodynamic calculation.Results show that the microstructure of the Al-Mn-Ti master alloy consists of binary quasicrystal matrix and ternary AlMnTi secondary phase.The evolutive tendency of Fe-rich intermetallic compounds with content of quasicrystal Al-Mn-Ti master alloy increasing can be described as follows: long needle-shaped β phase for Al-17Si-2Fe alloy,long plate-shaped ternary δ phase for 3 wt％ master alloy addition,Chinese-script and polyhedral α phases for 4 wt％ master alloy addition and finer plate-shaped quaternary δ phase with α phases for 5 wt％ master alloy addition.The ultimate tensile strength of the Al-17Si-2Fe alloy with 4 wt％ master alloy addition (a mass ratio of wMn/wFe ≈ 0.7) increases by 23.8％ and the friction coefficient decreases from 0.45 to 0.35 compared with those of Mnfree alloy,α-Fe phases have less negative effect on the matrix compared with the long needle-shaped β phase and the plate-shaped 5 phase.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Jing Zhang		1	0	0.0	0.0
2	Zhou-Yi Pang		1	0	0.0	0.0
3	Ling Wang		1	0	0.0	0.0
4	Chi-Chi Sun		1	0	0.0	0.0
5	Ning Liu		1	0	0.0	0.0
6	Hong-Mei Chen		1	0	0.0	0.0
7	Zhao-Xia Cheng		1	0	0.0	0.0
8	Ke Li		1	0	0.0	0.0