scholarly journals Microstructural Analysis of 316LN Austenitic Stainless Steel by Salt Bath Nitriding Process

Author(s):  
Arun Prasad. M , Dharmalingam. G Arun Prasad. M , Dharmalingam. G ◽  
2020 ◽  
Vol 27 ◽  
pp. 1541-1544
Author(s):  
B. Chaitanya kumar ◽  
P. Sri Charan ◽  
Kanishkar Jayakumar ◽  
D. Alankrutha ◽  
G. Sindhu ◽  
...  

2021 ◽  
Vol 309 ◽  
pp. 01169
Author(s):  
D. Raguraman ◽  
B. Ramakrishna Reddy ◽  
N. Sateesh ◽  
B. Ch. Nookaraju ◽  
Aravind Deshini ◽  
...  

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.


2012 ◽  
Vol 206 (15) ◽  
pp. 3399-3404 ◽  
Author(s):  
Jun Wang ◽  
Yuanhua Lin ◽  
Jing Yan ◽  
Dezhi Zen ◽  
Qiang Zhang ◽  
...  

2020 ◽  
Vol 26 (1) ◽  
pp. 4-6
Author(s):  
Xiliang LIU ◽  
Changjun MAO ◽  
Meihong WU ◽  
Wei CAI ◽  
Mingyang DAI ◽  
...  

In this study, salt bath nitriding was carried out at 565℃ for various times for 304 stainless steel (304SS). The effect of salt bath nitriding time on the microstructure, micro-hardness and wear resistance was investigated systematically. The results showed a nitriding layer was formed during salt bath nitriding, and the thickness of effective hardening layer is duration dependant. The maximum microhardness value of 1200HV0.01 was obtained at optimal duration of 150min, which was five times higher than that of the untreated sample. And the wear resistance could be significantly improved by salt bath nitriding, the lowest weight loss after wear resistance was obtained while nitriding for 150min, which was one tenth of that of untreated sample.


2016 ◽  
Vol 22 (3) ◽  
pp. 188
Author(s):  
Elhadj Ghelloudj ◽  
Hamid Djebaili ◽  
Mohamed Tahar Hannachi ◽  
Abdenour Saoudi ◽  
Bilal Daheche

<span>The aim of  this paper is to study and analyze the effects of a surface controlled salt bath nitriding on the microhardness of AISI 1045 steel. The nitriding process were implemented in salt bath component at ten different times (from 1 h to 10 h) when temperature was constant at (520ºC). The nitriding process repeated of another specimens at the same times but the temperature was (580ºC).The microstructure of surface layers was investigated by optical microscopy. Hardness profiles were measured with low-load hardness testing to determine the growth of the case depth after nitriding. Microhardness testing was carried out on samples to investigate the hardness profile at the transition from the compound to the diffusion layer. The microhardness of surface of nitrided sample at 520ºC and 580ºC was observed in the range of 318–430 HV0.3 and 329–421 HV0.3, respectively. Experimental results showed that the nitrides ε-Fe2-3(N,C) and γ’-Fe4(N,C) present in the compound layer increase the microhardness. It is found that salt bath nitriding parameters (time and temperature) improves the microhardness. </span>


2008 ◽  
Vol 59 (9) ◽  
pp. 1359-1363 ◽  
Author(s):  
Gui-jiang Li ◽  
Qian Peng ◽  
Cong Li ◽  
Ying Wang ◽  
Jian Gao ◽  
...  

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