Novel industrial hardmetals for mining, construction and wear applications

WC-Co hardmetals for mining, construction and wear applications are subjected to intensive abrasive wear, high impact loads, elevated temperatures, and severe thermal and mechanical fatigue. Novel hardmetal grades for such applications were developed, carefully tuned, up-scaled and implemented in in...

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Bibliographic Details
Published inInternational journal of refractory metals & hard materials Vol. 71; pp. 357 - 365
Main Authors Konyashin, I., Ries, B., Hlawatschek, S., Mazilkin, A.
Format Journal Article
LanguageEnglish
Published Shrewsbury Elsevier Ltd 01.02.2018
Elsevier BV
Subjects
Abrasive wear
Cemented carbides
Cobalt
Construction
Fracture toughness
Functionally gradient materials
Hardmetals
Hardness
High temperature
Impact loads
Metals
Microstructure
Mining
Tool wear
Tungsten carbide
Wear
Wear resistance
Mining
Construction
Hardness
Wear
Hardmetals
Fracture toughness
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Summary:WC-Co hardmetals for mining, construction and wear applications are subjected to intensive abrasive wear, high impact loads, elevated temperatures, and severe thermal and mechanical fatigue. Novel hardmetal grades for such applications were developed, carefully tuned, up-scaled and implemented in industry. They include (1) functionally graded hardmetals, (2) ultra-coarse hardmetals with nano-grain reinforced binder and (3) near-nano hardmetals. The novel hardmetals are characterized by the tailored microstructure, composition and properties optimized for specific applications. They are widely employed for manufacturing various tools and wear parts and possess significantly improved performance properties in comparison with conventional WC-Co hardmetals. •Functionally graded hardmetals comprise a hard surface layer with a low Co content•Life prolongation of tools with functionally graded hardmetals is up to 5 times•Hardmetals with nano-grain reinforced binder were developed and implemented•Life prolongation of hardmetals with nano-grain reinforced binder is by up to 3 times•Life prolongation of wear-parts comprising near-nano-hardmetals is by 2 to 3 times
ISSN:0263-4368
2213-3917
DOI:10.1016/j.ijrmhm.2017.10.021