TOTAL MATERIAL VARIABLES INFLUENCING A DUCTILE-BRITTLE TRANSITION TEMPERATURE FOR MOLYBDENUM
MARYLAND UNIV COLLEGE PARK ENGINEERING MATERIALS GROUP
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The ductile-brittle transition temperature for a coarse grained re- crystallized molybdenum material was found to be lower than for the original fine grained metal from which it was produced. The coarse grain size resulted from a critical straining and subsequent annealing treatment at a low recrystallization temperature. It is concluded from an analysis of various strength parameters which are either measured or estimated for this material that an improved grain boundary strength and a considerable influence of the dislocation substructure are responsible for the less brittle behavior of the coarse grained molybdenum.
- Metallurgy and Metallography