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This study aims to revealing the relationship among retained austenite (RA) morphology, deformation‐induced transformation (DIPT) behavior, and surface wear behavior. The hardening and fatigue behavior during wear of continuous film‐like RA (CFRA), blocky RA (BRA), discontinuous film‐like RA (DFRA), and point or flocculent RA (PRA) achieved through different tempering processes was investigated using quasi‐in situ fatigue test and impact abrasive wear test. RA morphology exhibited a significant influence on hardening and fatigue behavior during wear. CFRA exhibited the best wear properties, owing to its excellent fatigue performance and hardening capacity. The BRA displayed relative high wear performance, with adequate hardening capacity but weak fatigue performance. DFRA demonstrated comparable wear resistance to BRA because of better fatigue performance. PRA exhibited deficient wear performance because of insufficient fatigue properties and low work‐hardening ability. Highlights: Retained austenite with diverse morphology forms via varied tempering in bainitic steel.Fatigue experiment unveils austenite evolution during fatigue.Austenite morphology impacts wear via hardening and fatigue behavior. [ABSTRACT FROM AUTHOR]

Under the condition of high-stress abrasive wear, the strength at the interface of the WC/Fe matrix composites is significantly low, it is very easy to become the source of the overall damage to the material. In this study, the mechanical properties and interfacial organization of the WC/Fe matrix composites were analyzed by adding a binder and using a combination of powder metallurgy and gravity casting infiltration. The results showed that upon the addition of an adhesive, the width of the interface became twice as large as that without additives. Moreover, adding an adhesive also reduced the plastic deformation at the interface by more than three times. The best bonding agent was borax + sodium carbonate, which significantly increased the diffusion rate of atoms at the interface compared to sodium silicate and polyvinyl alcohol and also enhanced the interfacial mechanical properties. [ABSTRACT FROM AUTHOR]