NDLI: Effect of Diamond Burnishing on Fatigue Behaviour of AISI 304 Chromium-Nickel Austenitic Stainless Steel

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Effect of Diamond Burnishing on Fatigue Behaviour of AISI 304 Chromium-Nickel Austenitic Stainless Steel

Content Provider	MDPI
Author	Maximov, Jordan Duncheva, Galya Anchev, Angel Dunchev, Vladimir Argirov, Yaroslav
Copyright Year	2022
Description	The disadvantages of widely used austenitic stainless steels are their low hardness and relatively low fatigue strength. Conventional chemical-thermal surface treatments are unsuitable for these steels since they create conditions for inter-granular corrosion. An effective alternative is a low-temperature surface treatment, creating an S-phase within the surface layer, but it has a high cost/quality ratio. Austenitic steels can increase their surface micro-hardness and fatigue strength via surface cold working. When the goal is to increase the rotating bending fatigue strength of austenitic chromium-nickel steels, and the requirements for significant wear resistance are not paramount, diamond burnishing (DB) has significant potential to increase the fatigue strength and, based on the cost/quality ratio, can successfully compete with low-temperature chemical-thermal treatments. The main objective of this study is to establish the effect of DB on the rotating fatigue strength of AISI 304 L chromium-nickel austenitic steel. The influence of DB parameters on the surface integrity (SI) characteristics was studied. Optimal DB parameters under minimum roughness and maximum micro-hardness criteria were obtained. Rotating bending fatigue tests of the diamond burnished (in a different manner) and untreated specimens were performed. DB implemented via parameters providing maximum micro-hardness increased fatigue limit by 38% compared to untreated specimens.
Starting Page	4768
e-ISSN	19961944
DOI	10.3390/ma15144768
Journal	Materials
Issue Number	14
Volume Number	15
Language	English
Publisher	MDPI
Publisher Date	2022-07-07
Access Restriction	Open
Subject Keyword	Materials Manufacturing Engineering Austenitic Stainless Steels Enhancement of Fatigue Strength Diamond Burnishing Residual Stresses Strain-induced Martensite
Content Type	Text
Resource Type	Article

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