CLEAVAGE FRACTURE IN A Cr-Ni-Mo STEEL

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Sbornik Statei Ural' Zavod Tyazh. Mashinostroeniya im. S. Ordzhonikidze

OSTI ID:4195016

Mikul'chik, A V; Kats, Sh I

In order to evaluate the effect of technological factors of smelting and casting on the susceptibility of Cr-NiMo steel 34KhNZM io cleavage fracture (CF), six forgings were investigated. The investigations dealt with the following factors: macro and microstructure, the nature of ihe fracture, incidence of nonmetallic inclusions, and the mechanical properties of the forgings. It was established ihat CF is observed only in the upper and central portions of the forgings and that it is independent of the concentration of nonmetallic inclusions and gases in the steel. CF is caused by a coarse dendritic structure which had formed as a result of excessively high casting temperatures and which was not refined in the course of forging.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-000674
• OSTI ID: 4195016
• Journal Information: Sbornik Statei Ural' Zavod Tyazh. Mashinostroeniya im. S. Ordzhonikidze, Journal Name: Sbornik Statei Ural' Zavod Tyazh. Mashinostroeniya im. S. Ordzhonikidze Vol. Vol: No. 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CASTING
CHROMIUM STEELS
CLEAVAGE
CONFIGURATION
CRYSTALS
FAILURES
FORGING
GASES
GRAIN SIZE
IMPURITIES
LATTICES
MECHANICAL PROPERTIES
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
REFINING