Abstract
Abstract The ductile-to-brittle transition behavior of two austenitic Fe-18Cr-10Mn alloys with the combined addi-tion of nitrogen and carbon was investigated in this study. The alloys exhibited a ductile-to-brittle transition behav-ior because of unusual brittle fracture at low temperatures unlike conventional austenitic alloys. The alloy withhigher carbon content had higher yield and tensile strengths than that with lower carbon content due to the solidsolution strengthening effect resulting from carbon addition. However, the increase in carbon content promotedthe occurrence of intergranular fracture, and thus deteriorated the impact toughness. In order to develop success-fully the austenitic Fe-18Cr-10Mn alloys with the excellent combination of strength and toughness in the future,therefore, more systematic studies are required to find the appropriate amount and ratio of nitrogen and carbon.(Received December 11, 2014; Revised December 19, 2014; Accepted December 24, 2014)Key words : Ductile-to-brittle transition, Low-temperature brittle fracture, Austenitic alloys, Carbon, Impact toughness
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
