A novel high-strength, high-ductility and high-corrosion-resistance FeAlMnC low-density alloy

作者：Chen Po Chih; Chao Chuen Guang; Liu Tzeng Feng^*

来源：Scripta Materialia, 2013, 68(6): 380-383.

DOI：10.1016/j.scriptamat.2012.10.034

• Spinodal decomposition
• Plasma nitriding
• Corrrosion resistance
• Microhardness
• FeAlMnC alloy

The as-quenched Fe-8.68 wt.% Al-30.5 wt.% Mn-1.85 wt.% C alloy is plasma-nitrided at 500 degrees C for 8 h. The nitrided layer obtained is 40 mu m thick and composed predominantly of AlN, with a small amount of Fe4N. The resultant surface hardness (1860 Hv), substrate hardness (550 Hv), ductility (33.6%) and corrosion resistance in 3.5% NaCl solution in the present nitrided alloy are far superior to those obtained previously in optimally nitrided high-strength alloy steels, as well as martensitic and precipitation-hardening stainless steels.

• 出版日期2013-3