Published June 1977 | Version v1
Journal article Metadata-only

Fracture toughness of AISI M2 and AISI M7 high-speed steels

Creators

  • 1. Climax Molybdenum Co. of Michigan, Ann Arbor

Description

A study has been made of the fracture toughness of AISI M2 and M7 high-speed steels. Fracture toughness of these steels was found to depend principally on austenitizing temperature and hardness level. The results are highly reproducible. At usual working hardness levels the fracture toughness of M7 and M2 were approximately equal. Instrumented unnotched Charpy tests showed M2 to have higher impact strength than M7. A model for fracture that assumed preexisting flaws was tested with the data obtained. The model is consistent with the results obtained for M7 but not for M2. The assumption of preexisting flaws in M2 high-speed does not seem warranted. Possible mechanisms for crack initiation in M2 are discussed briefly

Additional details

Identifiers

DOI
10.1007/bf02661570;

Publishing Information

Journal Title
Metallurgical Transactions A
Journal Volume
8
Journal Issue
6
Series
Metall. Trans., A.
Journal Page Range
891-897
ISSN
0360-2133

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
9357281
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHROMIUM-MOLYBDENUM STEELS; FRACTURE PROPERTIES; HARDNESS; IMPACT STRENGTH; TEMPERATURE DEPENDENCE
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHROMIUM ALLOYS; CHROMIUM STEELS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; STEELS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
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