Influence of rare-earth modification on the properties of 18KhN2MFL steel for drill bit roller cutters

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States)

OSTI ID:5337313

Evseev, P P; Zhirkin, Y N

This paper examines the influence of rare-earth metals on the behavior of nonmetallic inclusions, the physical and mechanical properties, the critical transformation points, and the macrostructure of 18KhN2MFL cast steel used for the production of drill bit roller cutters with a diameter of 295 mm and more. The nonmetallic inclusion investigation results showed that for 18KhN2MFL steel deoxidized with aluminum, two types of inclusions are characteristic: sharp angled alumina inclusions and globular manganese sulfides with hardnesses of 2200 HV and 190 HV, respectively. The wear resistance tests showed that the rare-earth-metal-modified steel possesses higher abrasive wear resistance as compared with the unmodified; the relative wear resistance of such steel increases by 14-23%.

• Research Organization: All-Union Sci-Res. Institute For Drilling Technology
• OSTI ID: 5337313
• Journal Information: Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States), Journal Name: Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States) Vol. 27:9; ISSN MHTRA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHROMIUM ALLOYS
CRYSTAL STRUCTURE
DRILL BITS
DRILLING EQUIPMENT
EQUIPMENT
FIELD TESTS
FRACTURE PROPERTIES
HARDENING
HARDNESS
HEAT TREATMENTS
IMPACT STRENGTH
INCLUSIONS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
NICKEL ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
QUENCH HARDENING
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SERVICE LIFE
STEELS
TEMPERING
TENSILE PROPERTIES
TESTING
WEAR RESISTANCE