Repeated impact-abrasion testing of alloy white cast irons
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Cited by (25)
Effects of ‘impact’ and abrasive particle size on the performance of white cast irons relative to low-alloy steels in laboratory ball mills
2019, WearCitation Excerpt :Ultimately the results show that nothing occurring within a 600 mm laboratory ball mill deserves to be described as an ‘impact effect’. In a laboratory ball mill the impingement velocities and energies are far too small to cause any specific impact-related damage mechanisms such as dynamic stress-wave microfracture [25–27]. All of the damage and wear we have observed is ‘abrasive’ in nature.
Strain hardening of austenite in Fe-Cr-C-V alloys under repeated impact
2011, WearCitation Excerpt :The particles of precipitated M23C6 secondary carbides are assumed to disturb the dislocations movement and contribute to the strain hardening effects in tested Fe–Cr–C–V alloys. According to the literature [23], the impact resistance of Fe–Cr–C alloy with high chromium content decreases with increasing volume fraction of eutectic M7C3 carbides. Nevertheless, in the examined alloys, regardless of the increased amount of eutectic carbides in the structure, the higher impact resistance for higher vanadium content in alloy up to 3.28% V, can be related to the strain hardening of retained austenite.
Minimization of fines generation in size reduction of coals by impact crusher
2008, Fuel Processing TechnologyWear-resistant metallic and elastomeric materials in the mining and mineral processing industries—An overview
2001, WearCitation Excerpt :SiC and SiO2 grit were hard enough to cause fracture of primary carbides, resulting in material loss and hence high wear rates; however, blast furnace sinter was too soft to fracture the primary carbides, reinforcing an important point that only when the grit is too soft to fracture primary carbides will an increase in hardness via the amount of primary carbides lower the wear rate. Sare et al. [3] compared the impact-abrasion resistance of alloy white cast irons showing a weak correlation with bulk hardness but a strong correlation of impact-abrasion resistance with work-hardened surface hardness shown in Fig. 2a. Fig. 2b shows the change in microstructure of Cr–Mo 15–3 alloy in the as-cast and hardened state. The hardening treatment consisted of 2 h at 1000°C, followed by air cooling.