IRON-BASE ALLOYS STRENGTHENED BY LAVES PHASES AS SUBSTITUTES FOR STAINLESS STEELS.

被引：0

作者：

Dunning, J.S.

Glenn, M.L.

O'Brien, W.L.

机构：

来源：

Report of Investigations - United States, Bureau of Mines | 1980年 / 8470期

关键词：

IRON AND STEEL METALLOGRAPHY - Precipitation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Precipitation-hardened iron-base alloys are strengthened by a dispersion of the ternary Laves phase, Fe//2 (Mo, Ti). Aluminum and chromium additions changed the solid solubility limits of molybdenum and titanium in alpha -iron and affected the composition of precipitating phases. A baseline composition of Fe-7Mo-2Ti was selected to study the effects of aluminum and chromium additions on the hardening mechanism and microstructure and was also used in studies of mechanical properties and oxidation resistance. The study yielded workable, precipitation-hardening alloys, with elevated temperature strengths equivalent to or superior to types 304 and 316 stainless steels. Chromium and aluminum additions in combination were more effective in providing oxidation resistance than either addition was alone.

引用