Impression Creep Behavior Of Extruded Mg-5-Sn Alloy Lab Report
Impression Creep Behavior of Extruded Mg-Sn Alloy
V. Thenambika1, S Jayalakshmi1, R Arvind Singh2, J. Kiruba Nidhi1, Manoj Gupta3
1 Department of Mechanical Engineering, Bannari Amman institute of Technology, Sathyamangalam
2 Department of Aeronautical Engineering, Bannari Amman institute of Technology, Sathyamangalam
3Department of Mechanical Engineering, National University of Singapore (NUS), Singapore
Abstract:
Mg-Sn alloys contain thermally stable Mg2Sn phase, and are proposed as heat-resistant alloys for automobile engine applications. In this study, the creep behavior of Mg-5Sn alloy was investigated using impression creep technique. The impression creep tests were carried out under constant punching stress in the range of 80-320 MPa at temperatures between 373-573 K for dwell times up to 5 hours. The results highlight that creep of Mg-5Sn alloy was load and temperature dependent, i.e. increasing the load and temperature resulted in larger creep deformation and hence to higher creep rates. From the creep curves, based on the steady-state power law creep relationship, the …show more content…
The DMD technique adopts the simultaneous vortex stirring of the melt and its disintegration, with argon (Ar) gas for inert atmosphere and for melt disintegration, resulting in a high yield process and offers finer grain size . The detailed experimental procedure is described elsewhere [12]. Cylindrical billets of 36 mm diameter cut from the deposited ingots were soaked at 400 C for 1 h. The billets were hot extruded at 350 C using a 150 ton hydraulic press at an extrusion ratio of 20.25:1 to produce rods of 8 mm diameter that were used for further characterization [12]. High purity Mg and Sn were used to prepare the alloy. Optical and scanning electron microscopy studies were also carried out on the Mg-5Sn extruded alloy to study the microstructure of the
V. Thenambika1, S Jayalakshmi1, R Arvind Singh2, J. Kiruba Nidhi1, Manoj Gupta3
1 Department of Mechanical Engineering, Bannari Amman institute of Technology, Sathyamangalam
2 Department of Aeronautical Engineering, Bannari Amman institute of Technology, Sathyamangalam
3Department of Mechanical Engineering, National University of Singapore (NUS), Singapore
Abstract:
Mg-Sn alloys contain thermally stable Mg2Sn phase, and are proposed as heat-resistant alloys for automobile engine applications. In this study, the creep behavior of Mg-5Sn alloy was investigated using impression creep technique. The impression creep tests were carried out under constant punching stress in the range of 80-320 MPa at temperatures between 373-573 K for dwell times up to 5 hours. The results highlight that creep of Mg-5Sn alloy was load and temperature dependent, i.e. increasing the load and temperature resulted in larger creep deformation and hence to higher creep rates. From the creep curves, based on the steady-state power law creep relationship, the …show more content…
The DMD technique adopts the simultaneous vortex stirring of the melt and its disintegration, with argon (Ar) gas for inert atmosphere and for melt disintegration, resulting in a high yield process and offers finer grain size . The detailed experimental procedure is described elsewhere [12]. Cylindrical billets of 36 mm diameter cut from the deposited ingots were soaked at 400 C for 1 h. The billets were hot extruded at 350 C using a 150 ton hydraulic press at an extrusion ratio of 20.25:1 to produce rods of 8 mm diameter that were used for further characterization [12]. High purity Mg and Sn were used to prepare the alloy. Optical and scanning electron microscopy studies were also carried out on the Mg-5Sn extruded alloy to study the microstructure of the