Abex Corporation

Bruce A Heyer

Donald L Huth

Igor Y Khandros

Howard S Avery

Henry J Chapin

Dilip K Subramanyam

Fine grained austenite achieved in (12%) manganese steel, without annealing, by a novel combination of carbon and aluminum.

Austenitic-manganese steel

A base metal or alloy in the molten state is further alloyed with readily oxidizable elements in an alloying chamber containing a non-oxidizing protective atmosphere, whereupon a plugged hole in the alloying chamber is opened to allow the alloy to flow into a mold cavity also previously filled with a non-oxidizing atmosphere; consequently, the easily oxidized alloy is cast in the absence of atmospheric oxygen.

Foundry practices

A heat resistant ferrous metal alloy casting having improved resistance to thermal fatigue and comprising chromium, nickel, cobalt, tungsten and titanium.

Heat resistant alloy castings

A cast iron alloy of about (% by weight) 1.6 carbon, 2 nickel, 2 molybdenum, 28 chromium and up to 1 copper, balance iron, and characterized by chromium and molybdenum carbides dispersed in an austenitic matrix.

Erosion and corrosion resistant alloys containing chromium, nickel and

Castings of carbon 0.25/0.8, nickel 8/62, chromium 12/32, tungsten 0.05/2, titanium 0.05/1, balance iron (substantially) of austenitic microstructure, essentially free of cobalt and molybdenum, and not requiring heat treatment to develop service properties considerably improved compared to standard ACI alloy grades.

Growing community of inventors

Mahwah, NJ, United States of America

Bruce A Heyer