Analysis of surface mechanical attrition treated AISI 316L Steel: Variation in nanomechanical response within the treated layer

2021 ◽  
Author(s):  
Manoj D. Joshi ◽  
Vikesh Kumar ◽  
Santosh S. Hosmani
Keyword(s):  
Aisi 316L ◽  
Mechanical Attrition ◽  
316L Steel ◽  
Treated Layer

Tribological Response of Mechanical Attrition Treated Surface of AISI 316L Steel: The Role of Velocity of Colliding Balls

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Manoj D. Joshi ◽  
Vikesh Kumar ◽  
Indrasen Singh ◽  
Santosh S. Hosmani
Keyword(s):  
Contact Angle ◽  
Wear Rate ◽  
Steel Surface ◽  
Surface Hardness ◽  
Engine Oil ◽  
Aisi 316L ◽  
Lower Velocity ◽  
Mechanical Attrition ◽  
316L Steel ◽  
Colliding Balls

Abstract Current work focuses on studying the tribological response of the severely deformed surface of AISI 316L steel specimens using a ball-on-disk tribometer. Specimens are investigated under dry and lubricated (using engine-oil) conditions using different loads and sliding velocities. Surface mechanical attrition treatment (SMAT) using 6 mm diameter balls improves the surface hardness of steel by 56%. The wear performance of the severely deformed surface is significantly better than the non-treated steel under the investigated wear conditions. Under the lubricated condition, an improvement in the tribological response of attrition treated specimens is substantially greater than in the dry sliding condition. Steel surface collided with higher velocity balls shows the maximum reduction in wear-rate, which is about 44% and 88% under dry and lubricated conditions, respectively. Under the lubricated condition, the steel surface treated with a lower velocity of the colliding balls shows about a 97% reduction in wear-rate. The lowest specific wear-rates of the attrition treated specimens are 2.32 × 10−4 and 0.11 × 10−6 mm3/(N m) under dry and lubricated conditions, respectively. The contact angle of the lubricating engine-oil on the attrition treated surface (32.65–41.75 deg) is higher than the non-treated surface (19.2 deg). The coefficient of friction (COF) decreases with an increase in the contact angle on the treated surface. COF of the attrition treated specimen ranges from 0.04 to 0.07 under the lubricated sliding condition.

Microstructural Fractal Dimension of AISI 316L Steel

1994 ◽  
Vol 367 ◽  
Author(s):  
M. Hinojosa ◽  
R. Rodréguez ◽  
U. Ortiz
Keyword(s):  
Fractal Dimension ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Tensile Strain ◽  
Optical Microscope ◽  
Standard Test ◽  
Test Method ◽  
Aisi 316L ◽  
316L Steel ◽  
Deformation Processes

AbstractFractal dimension of the microstructure of AISI 316L steel (17 Cr, 12.7 Ni, 2.1 Mo, 1. 5 Mn, 0.01 C) with different degrees of strain were obtained from Richardson plots of grain boundary perimeter against magnification. Grain boundaries were revealed using conventional metallographic techniques and measurements were taken with the aid of an automatic image analizer (Quantimet 520) attached to an optical microscope. The magnifications used were 50, 100, 200, 400, and 1000X. The samples were obtained from a 4” diameter tubing, machined according to ASTM A370 standard test method and deformed to 5, 10, 15, and 20 % tensile strain. The results show that the fractal dimension of the grain boundaries changes as deformation is imparted to the material.These results suggest that fractal dimension may be used to describe microstructural evolution of metals during deformation processes.

The Effect of Time and Temperature of Nitridation-Oxidation Process on Properties and Corrosion Resistance of AISI 316L Steel

2018 ◽  
Vol 54 (5) ◽  
pp. 508-517
Author(s):  
Milad Yazdkhasti ◽  
Sayed Ahmad Hosseini ◽  
Hamidreza Javadinejad ◽  
Hossein Zare ◽  
Mohsen Saboktakin Rizi ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Oxidation Process ◽  
Aisi 316L ◽  
316L Steel

Shellac and Hydroxyapatitte Coatings on Titanium Niobium and AISI 316L Steel Surfaces Produced by Dip-Coating

2019 ◽  
Vol 43 (1) ◽  
pp. 51-55
Author(s):  
Bruna F. Gomes ◽  
Carlos A. Picon ◽  
Frederico A. Fernandes ◽  
Ubirajara P. Rodrigues Filho ◽  
Germano Tremiliosi-Filho
Keyword(s):  
Dip Coating ◽  
Aisi 316L ◽  
316L Steel ◽  
Steel Surfaces

scholarly journals Tribological Properties of AISI 316L Steel Surface Layer Implanted with Rare Earth Element

2015 ◽  
Vol 128 (5) ◽  
pp. 923-926
Author(s):  
B. Sartowska ◽  
M. Barlak ◽  
L. Waliś ◽  
W. Starosta ◽  
J. Senatorski ◽  
...  
Keyword(s):  
Surface Layer ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Tribological Properties ◽  
Steel Surface ◽  
Earth Element ◽  
Aisi 316L ◽  
316L Steel

scholarly journals Improving the Corrosion Resistance of AISI 316L Steel for Semiconductor Piping by Controlled Delta-Ferrite Content

2022 ◽  
Vol 60 (1) ◽  
pp. 46-52
Author(s):  
Young Woo Seo ◽  
Chan Yang Kim ◽  
Bo Kyung Seo ◽  
Won Sub Chung
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
316L Stainless Steel ◽  
Sem Analysis ◽  
Ferrite Content ◽  
Aisi 316L ◽  
Delta Ferrite ◽  
Aisi 316L Stainless Steel ◽  
316L Steel ◽  
The Difference

This study evaluated changes in delta-ferrite content depending on the preheating of AISI 316L stainless steel. We also determined the reasons for the variation in delta-ferrite content, which affects corrosion resistance. Changes in delta-ferrite content after preheating was confirmed using a Feritscope, and the microstructure was analyzed using optical microscopy (OM). We found that the delta-ferrite microstructure size decreased when preheating time was increased at 1295 oC, and that the delta-ferrite content could be controlled through preheating. Potentiodynamic polarization test were carried out in NaCl (0.5 M) + H2SO4 (0.5 M) solution, and it was found that higher delta-ferrite content resulted in less corrosion potential and passive potential. To determine the cause, an analysis was conducted using energy-dispersive spectroscopy (EDS), which confirmed that higher delta-ferrite content led to weaker corrosion resistance, due to Cr degradation at the delta-ferrite and austenite boundaries. The degradation of Cr on the boundaries between austenite and delta-ferrite can be explained by the difference in the diffusion coefficient of Cr in the ferrite and austenite. A scanning electron microscopy (SEM) analysis of material used for actual semiconductor piping confirmed that corrosion begins at the delta-ferrite and austenite boundaries. These results confirm the need to control delta-ferrite content in AISI 316L stainless steel used for semiconductor piping.

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