The ductile-brittle transition temperature for bend specimens of recrystallized powder metallurgy molybdenum has been shown to be lowered from 50ยฐC to 2ยฐC by the application of a hydrostatic pressure of -20,000 psi (~1.4 kbar). The pressure medium was kerosene. The samples were obtained from 0.020
โฆ LIBER โฆ
The effects of hydrostatic pressure on fracture and the ductile-brittle transition in polycrystalline molybdenum
โ Scribed by C.H Robbins; A.S Wronski
- Publisher
- Elsevier Science
- Year
- 1978
- Weight
- 922 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0001-6160
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A law governing the change in the ductility of metals and alloys under pressure is given: where P is the hydrostatic pressure, eloยข,1 is the strain accumulated from the start of necking to fracture, f, necking stress and (df/ds) the coefficient of linear work hardening. This relation is derived fro