TWINNING AND THE LOW TEMPERATURE MECHANICAL PROPERTIES OF POLYCRYSTALLINE COLUMBIUM, MOLYBDENUM AND CBMO ALLOYS.
Abstract
Mechanical tests in compression and tension over a range of temperatures embracing the ductile-brittle transition temperature have been done on irradiated and non-irradiated molybdenum and three alloys of CbMo. Stress relaxation tests in conjunction with these have been interpreted to show that gross slip and twinning are not involved in the initiation of fracture in those brittle materials. It is also deduced that irradiation damage and alloying act in a similar manner in inhibiting slip and twinning. By use of a strain gauge bridge, it was found that no slip took place within 2 x 10 to the -4th power sec of fracture, and also that gross twinning took place entirely within 2 x 10 to the -4th power sec. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1968
- Accession Number
- AD0664830
Entities
People
- B. J. Shaw
Organizations
- Westinghouse Electric Corporation