Three-body abrasive wear of carbide-free bainite, martensite and bainite-martensite structure of similar hardness

Effect of Short-Term Low-Temperature Austempering on the Microstructure and Abrasive Wear of Medium-Carbon Low-Alloy Steel

“…A recent comparative study of low carbon and Si-Mn alloyed steel 20Si2Mn3 revealed superior wear resistance of the Q-P-T treated samples to the conventionally quenching-tempering (Q-T) hardened sample, for the enriched amount of retained austenite was found to bring about a transition of the major wear mechanism from micro-cutting to ploughing and plastic fatigue wear [15]. Other researchers have also reported the benefits of increased austenite in promoting work hardening of worn surfaces through straining induced martensite transformation and high dislocation density [16][17][18][19][20][21][22][23][24][25]. Owing to these wear mechanisms, austenite-enriched bainitic steels were reported to be superior to martensitic steels in the wear under severe loading conditions [17][18][19][20][21].…”

“…Other researchers have also reported the benefits of increased austenite in promoting work hardening of worn surfaces through straining induced martensite transformation and high dislocation density [16][17][18][19][20][21][22][23][24][25]. Owing to these wear mechanisms, austenite-enriched bainitic steels were reported to be superior to martensitic steels in the wear under severe loading conditions [17][18][19][20][21]. Meanwhile, pearlite, bainite and martensite structures of similar hardness showed different wear property and wear mechanisms under the same abrasive wear conditions [21][22][23].…”

“…Owing to these wear mechanisms, austenite-enriched bainitic steels were reported to be superior to martensitic steels in the wear under severe loading conditions [17][18][19][20][21]. Meanwhile, pearlite, bainite and martensite structures of similar hardness showed different wear property and wear mechanisms under the same abrasive wear conditions [21][22][23]. So far, the published work has indicated great potential of better wear resistance through microstructure control.…”

“…The strengthening mechanisms of the multi-constituent structure have been described to include hardening of martensite due to carbon enrichment, strain-hardening of bainite, refining of martensite due to pre-formed bainite, as well as the increased retained austenite [3,28]. The improved strength and toughness properties have shown influence on the wear behaviour [13,18,[20][21][22][23][24].…”

Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

“…The average friction coefficient decreases with the increment of Mo content,293and the wear ratio shows a descending tendency. As is well known that the excellent wear 294 resistance depends on the good coordination between matrix and hard phase[42]. According to the 295 mechanical properties mentioned before, the hardness of matrix increases with the addition of Mo.…”