Role of retained austenite on the toughness of steels with and without carbon. [9Ni; 8Ni--2Mn--0. 25Ti]

Conference · Mon Sep 01 04:00:00 EDT 1975

OSTI ID:7355193

Morris, Jr, J W; Jin, S; Syn, C K

The presence of retained austenite suppresses the ductile-brittle transition temperature of the 9Ni steel (containing 0.1 percent carbon) in both impact testing and fracture toughness testing. However, in an interstitial-free Fe--8Ni--2Mn--0.25Ti steel, the benefit of retained austenite is seen only in impact testing, and little improvement in fracture toughness is observed. The stabilities of retained austenite in both alloy systems are compared in terms of chemical compositions and strain rate. The implications on the role of retained austenite are discussed.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7355193
• Report Number(s): LBL-4507; CONF-760819-10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITE
CARBON ADDITIONS
DUCTILE-BRITTLE TRANSITIONS
FRACTURE PROPERTIES
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL STEELS
PHYSICAL PROPERTIES
STEELS
THERMODYNAMIC PROPERTIES
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSITION TEMPERATURE