Assessment of wear properties on low temperature molten salt bath nitriding on austenitic stainless steel

2020 ◽  
Vol 27 ◽  
pp. 1541-1544
Author(s):  
B. Chaitanya kumar ◽  
P. Sri Charan ◽  
Kanishkar Jayakumar ◽  
D. Alankrutha ◽  
G. Sindhu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Low Temperature ◽  
Molten Salt ◽  
Salt Bath ◽  
Wear Properties ◽  
Salt Bath Nitriding ◽  
Molten Salt Bath

Neutral Molten Salt-Bath Carburizing of Ti6Al4V Alloy with Nanocrystalline Surface Layer at Low Temperature Assisted by Surface Mechanical Attrition Treatment

2017 ◽  
Vol 727 ◽  
pp. 1001-1008 ◽  
Author(s):  
Quan Tong Yao ◽  
Wei Ping Tong ◽  
Meng Yao Li ◽  
Guang Lan Zhang
Keyword(s):  
Surface Layer ◽  
Low Temperature ◽  
Molten Salt ◽  
Salt Bath ◽  
Coarse Grained ◽  
Experimental Result ◽  
Surface Mechanical Attrition Treatment ◽  
Neutral Salt ◽  
Mechanical Attrition ◽  
Molten Salt Bath

Nanocrystalline surface layer about 10~15μm thick was fabricated on the surface of Ti6Al4V sheet by means of the surface mechanical attrition treatment (SMAT). The average grain size was about 10nm and the grain characteristic presented equiaxed morphology. The nanocrystalline surface layer could be perfectly maintained below 550°C in the following thermal stability analysis. Neutral salt mixture was about 21% NaCl, 31% BaCl2 and 48% CaCl2 and additionally 5% Na2CO3 of total was utilized. After carburizing process, a continuous charcoal grey carburized layer was composed of TiC and carbon supersaturated solid solution, the hardening layer was about 10~15μm thick. The hardness of the outermost surface reached 1000HV, which was much higher than its coarse-grained counterpart in the same carburizing condition. The experimental result indicated that the carburizing kinetics was obviously enhanced by nanocrystalline surface layer assistance. Furthermore, the neutral molten salt-bath carburizing was verified that it could be performed in a relatively low temperature of 650°C.

Salt Bath Nitriding

2003 ◽  
pp. 53-63
Keyword(s):  
Molten Salt ◽  
Sodium Carbonate ◽  
Salt Bath ◽  
Analysis Procedure ◽  
Design Parameters ◽  
Quench Medium ◽  
Salt Bath Nitriding ◽  
Sodium Cyanate ◽  
Molten Salt Bath

Abstract This chapter presents the salts used and the process advantages of salt bath nitriding. It discusses the types of salt bath nitriding processes, such as preheating, immersion into the molten salt bath, cooling in still air or a suitable quench medium, postwashing, and optional polishing or oiling. The chapter provides a discussion on salt bath nitriding equipment and procedure. It describes the materials and equipment, analysis procedure, and determination of sodium carbonate and sodium cyanate for titration testing of the nitriding salt bath. The chapter explains the procedures for maintenance of the salt bath and related equipment. It also discusses safety precautions and design parameters for furnace equipment.

Influence of time on the microstructure of AISI 321 austenitic stainless steel in salt bath nitriding

2012 ◽  
Vol 206 (15) ◽  
pp. 3399-3404 ◽  
Author(s):  
Jun Wang ◽  
Yuanhua Lin ◽  
Jing Yan ◽  
Dezhi Zen ◽  
Qiang Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Salt Bath ◽  
Aisi 321 ◽  
Salt Bath Nitriding

scholarly journals Characteristic of Low Temperature Carburized Austenitic Stainless Steel

2018 ◽  
Vol 299 ◽  
pp. 012048
Author(s):  
Istiroyah ◽  
M A Pamungkas ◽  
G Saroja ◽  
M Ghufron ◽  
A M Juwono
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Low Temperature
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