A high-strength bulk nanocrystalline Al-Fe alloy processed by mechanical alloying and spark plasma sintering

作者：Sasaki T T^*; Mukai T; Hono K

来源：Scripta Materialia, 2007, 57(3): 189-192.

DOI：10.1016/j.scriptamat.2007.04.010

• mechanical alloying
• plasma spark sintering
• aluminum alloy
• nanocrystalline alloy

A bulk nanocrystalline Al-5 at.% Fe alloy was synthesized by mechanical alloying and spark plasma sintering. The alloy exhibited a very high compressive yield strength of 1 GPa with a plastic strain of 0.3. The alloy consists of coarse alpha-Al grains that form from powder boundaries and nanocrystalline regions composed of alpha-Al and Al6Fe phases. The combination of the coarse and nanoscale grains are considered to be the reason for the large plastic strain in such a high-strength material.

• 出版日期2007-8