Notch Effects at Low-Temperature Discontinuous Flow

• DOI: 10.1007/s11223-016-9774-z
• Publication Date: 2016-08-15T03:02:31Z
• Authors: E. V. Vorob’ev
• Keywords: Hardening (computing); Flow stress; Negative temperature; Strain hardening exponent

A particularly strong hardening of the specimens made of austenitic steels with notches of a large radius of bending has been detected at the temperature of 4.2 K. This phenomenon is attributed to special conditions of realization of the low-temperature discontinuous flow effect. The correlation between the strength characteristic and the number of strain jumps in the zone of stress concentration has been revealed.