ORAL
| SESSION: CoatingsTuePM-R3 | 4th Intl. Symp. on Sustainable Surface and Interface Engineering: Coatings for Extreme Environments |
| Tue Oct, 24 2017 | Room: Peninsula 1 |
| Session Chairs: Pawel Rokicki; Sachin Patil; Session Monitor: TBA |
14:30: [CoatingsTuePM05] Invited
Effect of laser shock peening (LSP) on tribological performance hot work tool steel Sachin
Patil1 ; Valmik
Bhawar
2 ; Prakash
Kattire
2 ;
Sandeep
Thakare3 ; P.p.
Date
2 ;
0 ;
1Bharat forge ltd,pune, PUNE, India;
2, , ;
3Bharat forge limited, pune, India;
Paper Id: 212
[Abstract] Laser shock peening (LSP) is surface enhancement technology used to improve fatigue life. This paper focused on to study the effect of laser peening on micro-structural and mechanical properties of AISI L6 hot work tool steel. Laser shock peening treatment was performed on these tool steel specimens by using laser with 1.6 J energy and 2 Hz frequency. X-ray stress analysis, micro-hardness testing and micro-structural analysis were performed to characterize these laser peened specimens. In addition, pin on disk wear testing were executed to recognize wear and fatigue behavior of this laser peened tool steels. It was observed that along with deep compressive residual stress generation, laser shock peening also induces work hardening effect which are responsible for significant improvement in fatigue and wear performance of this tool steel.
| SESSION: AdvancedMaterialsMonAM-R8 | Marquis International Symposium on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development(3rd Intl Symp. on New and Advanced Materials and Technologies for Energy, Environment and Sustainable Development) |
| Mon Oct, 23 2017 | Room: Maria Luisa & Maria Fernanda |
| Session Chairs: Sandeep Thakare; Parvez Alam; Session Monitor: TBA |
12:00: [AdvancedMaterialsMonAM03] Invited
Experimental Investigations on Electron Beam Welding of SAE 15B41 Steel Sandeep
Thakare1 ; Valmik
Bhavar
2 ; Prakash
Kattire
2 ;
Sachin
Patil3 ; Vinayak
Pawar
2 ;
0 ;
1Bharat forge limited, pune, India;
2, , ;
3Bharat forge ltd,pune, PUNE, India;
Paper Id: 211
[Abstract] Electron beam welding (EBW) has been developed for many years and is being increasingly implemented in various industrial applications. Since EBW is a fusion-welding process, metallurgical phenomena associated with fusion still exist and cause difficulties. However, these are often minor compared to those in conventional arc welding. The aim of this paper is to find out the influence of electron beam welding upon the mechanical properties and microstructure of SAE 15B41H. Plates with 25 mm thickness have been butt welded with electron beam without using filler material. The mechanical properties and microstructure in the area of base metal, heat affected zone, and fusion zone was studied. The microstructure in the fusion zone consists of martensite, ferrite and carbides. The microhardness in the fusion zone is on the higher side compared to base metal. The U.T.S and Y.S. of EBW is higher and % elongation is lower as compare to base metal.
