Influence of Shot Peening on DIN 1.2714 Hot Work Tool Steel

Abstract

Shot peening is one of the most popular surface enhancement technique used to improve fatigue performance of different materials. This paper focuses on to study the effect of different shot peening parameters on micro-structural and mechanical properties of DIN 1.2714 tool steel specimens. Shot peening treatments were carried out by varying shot size and peening intensity. X-ray stress analysis, micro-hardness testing and micro-structural analysis were performed to characterize these specimens. In addition, pin on disk wear testing was executed to recognize wear behavior of this shot peened tool steels. It was observed that along with compressive residual stress generation, shot peening also induces work hardening effect and modifies surface structure which are responsible for significant improvement in this tool steel.

Influence of Shot Peening on the Wear Behaviour of Medium Carbon Steel

“…1000 seconds to saturate the COF behaviour on the shot peened surfaces. Results of the higher COF were in agreement with Moravčík and Hazlinger, 2017;Abens et al, 2019;Bhavar, et al, 2017;Gangopadlhyay, 2008;Palacios et al, 2014;Trško et al, 2015 due to higher surface roughness. Shot peening generates higher roughness compared to ground surface, meaning that it highly increases contact points of asperities, or real contact area between two materials in contact (Mitrovic at al., 2014).…”

“…The higher friction coefficient was measured due to the high surface roughness created during the shot peening process. Bhavar et al, 2017 in work report the results of influence of shot peening on DIN 1.2714 Hot Work Tool Steel. Both coefficient of friction and wear rate increase with increase in shot size and peening intensity.…”

Increasing wear and corrosion resistance of steel products by combined laser thermomechanical treatment

“…Methods for determining the modes of shot peening SP was carried out at the technological unit (LLC UKRM-INGLASS, Ukraine), taking into account the results of the exploratory research and technological recommendations[5,18]. For surface hardening, hardened metal balls made of ShKh15 steel with a grain size of 200-500 µm were used.…”