Slurry Erosion Behaviour of Pack Boronized 13-4 Martensitic Stainless Steel for Hydro Turbine Blades

2018 ◽  
Vol 5 (9) ◽  
pp. 17380-17388
Author(s):  
Gaurav Nath ◽  
Satish Kumar
Keyword(s):  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Turbine Blades ◽  
Slurry Erosion ◽  
Hydro Turbine ◽  
Erosion Behaviour

Slurry Erosion Response of Heat Treated 13Cr-4Ni Martensitic Stainless Steel

2012 ◽  
Vol 710 ◽  
pp. 500-505 ◽  
Author(s):  
Hassan Jayaraj Amarendra ◽  
Pradeep Kalhan ◽  
Gajanan Prabhakar Chaudhari ◽  
Sameer Kumar Nath ◽  
Shravan Kumar
Keyword(s):  
Stainless Steel ◽  
Erosion Resistance ◽  
Martensitic Stainless Steel ◽  
Cast Steel ◽  
Heat Treatments ◽  
Wear Loss ◽  
Slurry Erosion ◽  
Heat Treated ◽  
Work Effect ◽  
Wear Characterization

In the present work, effect of various heat treatments on slurry erosion behavior of 13Cr-4Ni martensitic stainless steel (MSS) at different impingement angles has been studied. The as-received cast bars of MSS were given various heat treatments. These heat treatments involved the austenitization of cast steel at temperatures of 950° C, 1000° C and 1050° C for different soaking durations of 2, 4 and 6 h at each temperature. This was followed by oil quenching then tempering for 1 h at a 600° C air cooled. Heat treated MSS samples were characterized for microstructure and mechanical properties viz. hardness, ductility (% elongation), tensile strength (UTS), and toughness. For wear characterization, slurry erosion tests were conducted at different impingement angles for as-received cast and heat treated samples. The heat treated MSS shows approximately 34% lesser weight loss as compared to as-received cast MSS. Increase in toughness of heat treated samples is found to be responsible for the improved slurry erosion resistance. Impingement angle close to 0° showed least wear loss.

Study on Slurry Paste Boronizing of 410 Martensitic Stainless Steel Using Taguchi Based Desirability Analysis (TDA)

2015 ◽  
Vol 5 (3) ◽  
pp. 64-77 ◽  
Author(s):  
S.C. Atul ◽  
R. Adalarasan ◽  
M. Santhanakumar
Keyword(s):  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Turbine Blades ◽  
Surface Hardness ◽  
Wear Loss ◽  
Gas Turbine Blades ◽  
Wear And Corrosion ◽  
Diffusion Depth ◽  
Desirability Analysis ◽  
Optimal Setting

The application of martensitic stainless steel in gas turbine blades, bushings, valves and mine ladder rungs requires wear and corrosion resistant surfaces. The process of boronizing can produce extremely hard and wear resistant surfaces for such components. The study depicts the application of Taguchi based desirability analysis for parameter design in the process of boronizing martensitic stainless steel. The surface hardness, diffusion depth and wear loss were observed on samples subjected to slurry paste boronizing (SPB). During experimentation, the parameters varied include the boronizing temperature, boronizing time and paste thickness. The optimal setting of the boronizing parameters identified by Taguchi based desirability analysis (TDA) was observed to improve the quality characteristics studied in the process significantly. The duration of boronizing process was found to play a major role in controlling the diffusion depth and the formation of a mono phasic (FeB) layer on the surface was found to be the reason for improved hardness and wear resistance.

Slurry erosion behaviour of thermomechanically treated 16Cr5Ni stainless steel

2018 ◽  
Vol 119 ◽  
pp. 411-418 ◽  
Author(s):  
Brij Kishor ◽  
G.P. Chaudhari ◽  
S.K. Nath
Keyword(s):  
Stainless Steel ◽  
Slurry Erosion ◽  
Erosion Behaviour

Slurry erosion, sliding wear and corrosion behavior of martensitic stainless steel composites reinforced in-situ with NbC particles

Wear ◽  
2019 ◽  
Vol 420-421 ◽  
pp. 149-162 ◽  
Author(s):  
Wen Hao Kan ◽  
Gwénaëlle Proust ◽  
Vijay Bhatia ◽  
Li Chang ◽  
Kevin Dolman ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Behavior ◽  
Sliding Wear ◽  
Martensitic Stainless Steel ◽  
Slurry Erosion ◽  
Wear And Corrosion

scholarly journals Effect of Temperature and Hold Time of Induction Brazing on Microstructure and Shear Strength of Martensitic Stainless Steel Joints

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1586 ◽  
Author(s):  
Yunxia Chen ◽  
Haichao Cui
Keyword(s):  
Stainless Steel ◽  
Shear Strength ◽  
Power Plants ◽  
Filler Metal ◽  
Martensitic Stainless Steel ◽  
Braze Alloy ◽  
Hold Time ◽  
Turbine Blades ◽  
Element Distribution ◽  
Effect Of Temperature

1Cr12Mo martensitic stainless steel is widely used for intermediate and low-pressure steam turbine blades in fossil-fuel power plants. A nickel-based filler metal (SFA-5.8 BNi-2) was used to braze 1Cr12Mo in an Ar atmosphere. The influence of brazing temperature and hold time on the joints was studied. Microstructure of the joints brazed, element distribution and shear stress were evaluated at different brazing temperatures, ranging from 1050 °C to 1120 °C, with holding times of 10 s, 30 s, 50 s and 90 s. The results show that brazing joints mainly consist of the matrix of the braze alloy, the precipitation, and the diffusion affected zone. The filler metal elements diffusion is more active with increased brazing temperature and prolonged hold time. The shear strength of the brazed joints is greater than 250 MPa when the brazing temperature is 1080 °C and the hold time is 30 s.

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