scholarly journals Effect of Aqueous Soluted Nitriding Process on AISI 304 Austenitic Stainless Steel under Dry Sliding Conditions

2021 ◽  
Vol 309 ◽  
pp. 01066
Author(s):  
M. Mamatha Gandhi ◽  
J. Saranya ◽  
G. Keerthi Reddy ◽  
S. Srikanth ◽  
Ch. Keshav ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Hardness ◽  
Wear Test ◽  
Salt Bath ◽  
Nitriding Process ◽  
Wear Testing ◽  
304 Stainless Steel ◽  
Cylindrical Shape ◽  
Aisi 304 ◽  
Pin On Disc

AISI 304 stainless steel categorized under austenitic, has good resistance to corrosion and applicable for high resistance to pitting and stresses. But it has poor hardness, sterngth and resistance to wear. In order to overcome the above problem, various hardening techniques like nitriding, carburizing, carbonitriding, Cyaniding etc are preferred. In this work, aqueous soluted nitriding process is carried out to improve the surface hardness and wear resistance on AISI 304 specimens. Three specimens in cylindrical shape with a diameter of 10mm and length 35mm are treated with salt bath nitriding process for a time period of 45 minutes, 90 minutes, 120 minutes and named as SBN 1, SBN 2, SBN 3 respectively. One specimen is kept untreated to compare the results with treated specimens. After the heat treatment procedure is completed, pin on disc wear testing instrument was used to conduct a wear test at a constant speed and load. All the specimens were subjected to Scanning Electron Microscope test and the results were compared.

scholarly journals Investigation of Mechanical Properties of AISI 316 Stainless Steel by Carbonitriding Process

2020 ◽  
Vol 184 ◽  
pp. 01018
Author(s):  
A Rohit Sai Krishna ◽  
B Vamshi Krishna ◽  
D Harshith ◽  
T Sashank ◽  
Ram Subbiah
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Wear Behavior ◽  
Wear Test ◽  
Salt Bath ◽  
Wear Loss ◽  
Case Hardening ◽  
Wide Range ◽  
Pin On Disc ◽  
Aisi 316 Stainless Steel

This project investigates on salt bath nitriding process in order to improve the wear behavior of the material. This process increases the hardness of the material. The specimens were nitrided at 580°c on three different timing hours such as 60 minutes, 90 minutes & 120 minutes. A pin on disc machine is used to conduct wear test, so that wear loss can be determined. The specimens are to be magnified by metallographic test like scanning electron microscope. The untreated specimen is used to compare with the nitrided specimen. The best specimen is chosen which determines the life of material & improves the better wear resistance. The hardness of untreated material and nitrided material are compared. The material AISI stainless steel has many unique properties but it lacks wear resistance and hardness because of which it has limited applications. By conducting heat treatment operation, the hardness of the material does not improve, but by conducting case hardening process the hardness of the outer case will be high compared to base metal. If the hardness and wear resistance of the material improves the material can be used in wide range of applications.

Surface Mechanical Properties of Ti Alloys Produced by Excimer Laser Mixing of Ti on AISI 304 Stainless Steel

1988 ◽  
Vol 128 ◽  
Author(s):  
T. R. Jervis ◽  
J-P. Hirvonen ◽  
M. Nastasi ◽  
T. G. Zocco ◽  
J. A. Martin ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Excimer Laser ◽  
Surface Hardness ◽  
304 Stainless Steel ◽  
Optimum Level ◽  
Surface Layers ◽  
Aisi 304 Stainless Steel ◽  
Friction Behavior ◽  
Aisi 304 ◽  
Amorphous Surface

ABSTRACTWe have investigated the properties of surface alloys of Ti formed by excimer laser melting and mixing of Ti overlayers on AISI 304 stainless steel substrates.The thickness of the initial Ti surface layers and the fluence and number of pulses used to mix the surface were varied to investigate a broad range of processing conditions. Samples were uniformly translated at different speeds under repetitive pulses of homogenized laser radiation at 308 nm to vary the number of pulses incident on the sample. We investigated the surface structure and composition, the wear and friction behavior, and the surface hardness of the resulting alloys.The extent of mixing is observed by Rutherford backscattering spectroscopy to be proportional to the number of pulses incident on the sample. Amorphous surface layers are formed at some mixing levels with a composition which indicates that Ti substitutes for Fe in the stainless steel on a one to one basis. Incorporation of C from surface and interface contamination is observed but at a level much below that found in comparable ion implanted materials.Friction coefficient measurements indicate that there exists an optimum level of mixing for each layer thickness. Excessive mixing degrades both the coefficient of friction and the wear performance in dry sliding tests.As with the tribological measurements, the surface hardness showed a dependence on amount of mixing. The surface hardness of the as deposited samples was higher than that of the laser mixed samples, initially decreased with mixing, and finally increased with further mixing.

Surface Mechanical Properties of Ti Alloys Produced by Excimer Laser Mixing of Ti on AiSi 304 Stainless Steel

1988 ◽  
Vol 140 ◽  
Author(s):  
T. R. Jervis ◽  
J-P. Hirvonen ◽  
M. Nastasi ◽  
T. G. Zocco ◽  
J. A. Martin ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Excimer Laser ◽  
Surface Hardness ◽  
304 Stainless Steel ◽  
Optimum Level ◽  
Surface Layers ◽  
Aisi 304 Stainless Steel ◽  
Friction Behavior ◽  
Aisi 304 ◽  
Amorphous Surface

AbstractWe have investigated the properties of surface alloys of Ti formed by excimer laser melting and mixing of Ti overlayers on AISI 304 stainless steel substrates.The thickness of the initial Ti surface layers and the fluence and number of pulses used to mix the surface were varied toinvestigate a broad range of processing conditions. Samples were uniformly translated at different speeds under repetitive pulses of homogenized laser radiation at 308 nm to vary the number of pulses incident on the sample. We investigated the surface structure and composition, the wear and friction behavior, and the surface hardness of the resulting alloys.The extent of mixing is observed by Rutherford backscattering spectroscopy to be proportional to the number of pulses incident on the sample. Amorphous surface layers are formed at some mixing levels with a composition which indicates that Ti substitutes for Fe in the stainless steel on a one to one basis. Incorporation of C from surface and interface contamination is observed but at a level much below that found in comparable ion implanted materials.Friction coefficient measurements indicate that there exists an optimum level of mixing for each layer thickness. Excessive mixing degrades both the coefficient of friction and the wear performance in dry sliding tests.As with the tribological measurements, the surface hardness showed a dependence on amount of mixing. The surface hardness of the as deposited samples was higher than that of the laser mixed samples, initially decreased with mixing, and finally increased with further mixing.

scholarly journals Improving the Mechanical Properties of AISI 2205 Duplex Stainless Steel by Cryogenic Treatment Process

2020 ◽  
Vol 184 ◽  
pp. 01019
Author(s):  
Shivani Koppula ◽  
Aakula Rajkumar ◽  
Siram Hari Krishna ◽  
Reddi Sai Prudhvi ◽  
S. Aparna ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Cryogenic Treatment ◽  
Wear Test ◽  
Wear Testing ◽  
Variable Load ◽  
Treatment Conditions ◽  
Pin On Disc ◽  
The Impact

The Duplex stainless steel AISI 2205 is well known for its corrosion resistance, applicable to high pitting and stress resistance. Cryogenic treatment is chosen to boost the mechanical properties of AISI 2205 Stainless Steel. The specimens undergo cryogenic treatment, one of them being treated to the saturated limit. For comparison purpose, one specimen is kept as untreated. Wear test will be conducted at a constant speed and variable load by a pin on disc wear testing apparatus. Wear test is completed to assess the capability of utilizing a specific surface building innovation to diminish wear for a particular application and to research the impact of treatment conditions on the wear execution, so upgraded surface treatment conditions can be figured it out. Eventually, all specimens were undergone with Scanning Electron Microscope analysis.

An overview on AISI 304 stainless steel treated with aqueous soluted nitriding process

2020 ◽  
Vol 27 ◽  
pp. 1708-1712
Author(s):  
Sheri Vaijayanth ◽  
Shivani Koppula ◽  
Ram Subbiah ◽  
N. Sateesh
Keyword(s):  
Stainless Steel ◽  
Nitriding Process ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304

scholarly journals Friction Performance of Aged T-BFRP Composite for Bearing Applications

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1066 ◽  
Author(s):  
Umar Nirmal
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Wear Test ◽  
Test Rig ◽  
Microscopy Imaging ◽  
Friction Coefficients ◽  
Aisi 304 ◽  
Pin On Disc ◽  
Optical Microscopy Imaging ◽  
Friction Performance

The current work is an attempt to reduce friction coefficient of the treated betelnut fibre reinforced polyester (T-BFRP) composites by aging them in twelve different solutions with different kinematic viscosities. The test will be performed on a pin on disc (POD) wear test rig using different applied loads (5–30 N), different sliding distances (0–6.72 km) at sliding speed of 2.8 m/s subjected to a smooth stainless steel counterface (AISI-304). Different orientations of the fibre mats such as anti-parallel (AP) and parallel (P) orientations subjected to the rotating counterface will be considered. The worn surfaces were examined through optical microscopy imaging and it was found that the aged specimens had significantly lower damages as compared to neat polyester (NP) and the unaged samples. Besides, P-O samples revealed lower friction coefficients as compared to AP-O, i.e., reduction was about 24.71%. Interestingly, aging solutions with lower kinematic viscosities revealed lower friction coefficients of the aged T-BFRP composites when compared to the ones aged in higher kinematic viscosities.

scholarly journals Assessment of Wear Behavior on Treated AISI 630 Stainless Steel by Salt Bath Nitriding Process under Dry Sliding Conditions

2021 ◽  
Vol 309 ◽  
pp. 01169
Author(s):  
D. Raguraman ◽  
B. Ramakrishna Reddy ◽  
N. Sateesh ◽  
B. Ch. Nookaraju ◽  
Aravind Deshini ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Wear Behavior ◽  
Research Work ◽  
Wear Test ◽  
Hardness Test ◽  
Salt Bath ◽  
Nitriding Process ◽  
Test Machine ◽  
Salt Bath Nitriding

Grade 630 martensitic precipitation hardening stainless steel has a combination of high hardness and strength after suitable heat treatment. The great advantage of this grade is that they are usually supplied in the condition treated with the solution and then aged to achieve a sufficient high strength. Chosen for this research work, AISI 630 stainless steel samples were subjected to salt bath nitriding process. Three samples were chosen in the shape of tapered cylindrical shapes with diameter of 10 mm and length of 40 mm. The specimens were subjected to 60 Minutes, 120 Minutes, 180 Minutes and named as SBN1, SBN2, SBN3 respectively. One untreated specimen is kept aside for the comparison purpose with the treated specimens. After the heat treatment process wear test were conducted by pin on disc wear test machine. Then the hardness test is carried out using the Rockwell hardness test. The microscopic images were taken using Scanning electron microscope. The results were compared and the best wear resistant material is chosen for the required application.

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