The method of determining the cold brittleness threshold from the type of fracture ordinarily used for steels can also be used for molybdenum.
In spite of the large difference in the cold brittleness threshold of St. 3 steel and TsM2A molybdenum, in bimetal samples the molybdenum cold brittleness threshold is lower than that of the steel, apparently due to the relatively thin cladding layer by comparison with the base layer.
Bimetal samples of St. 3+TsM2A (notch in the steel) have a higher impact strength than the samples of St. 3 steel alone because the work of crack nucleation in the steel layer and in the molybdenum layer is doubled in the bimetal.
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Ababkov, V.T., Gulyaev, A.P. Susceptibility to brittle fracture of the St. 3+TsM2A bimetal. Met Sci Heat Treat 10, 545–548 (1968). https://doi.org/10.1007/BF00654365
- High Impact
- Brittle Fracture
- Impact Strength