Duplex Hardening: An Advanced Surface Engineering Technique for Helicopter Transmissions

1990 ◽  
pp. 228-237
Author(s):  
D. P. Davies
Keyword(s):  
Surface Engineering ◽  
Engineering Technique

Innovative Surface Engineering Technique for Surface Modification of Mg Alloy for Orthopedic Application

2019 ◽  
pp. 225-240
Author(s):  
Muhammad Al’Hapis Abdul Razak ◽  
Ahmad Majdi Abdul-Rani ◽  
Abdul’ Azeez Abdu Aliyu
Keyword(s):  
Surface Modification ◽  
Surface Engineering ◽  
Mg Alloy ◽  
Engineering Technique

Surface Micro Patterning of Aluminium Reinforced Composite through Laser Peening

2017 ◽  
Vol 7 (4) ◽  
pp. 15-27 ◽  
Author(s):  
G. Ranjith Kumar ◽  
G. Rajyalakshmi ◽  
Vijaya Kumar Manupati
Keyword(s):  
Surface Properties ◽  
Surface Engineering ◽  
Weight Ratio ◽  
Hardened Layer ◽  
Laser Peening ◽  
Aluminium Composite ◽  
Micro Patterning ◽  
Reinforced Composite ◽  
Engineering Technique ◽  
The Impact

Aluminium Composites have universal engineering applications because of their higher strength to weight ratio, ductility, and formability. However, in diverse applications, mechanical properties are the prerequisite at closer surface regions. Such localized changes without impacting various surface treatment approaches can attempt the bulk phase. Laser peening is an advanced surface engineering technique, which has been successfully applied to improve the surface morphology of the material. In this work, the authors focus on improving the surface properties of Al7075 composite through laser peening technique. The hardened layer was evaluated using surface integrity with optical microscopy, EDS, SEM and analysis of microhardness. Process parameters and resulting microstructures of Aluminium composite are summarized, along with the impact of laser peening on surface properties. Research results indicated that laser peening shows a significant influence on the final condition of the surface layer of Aluminium composite.

scholarly journals Enhancement of Microhardness and Tribological Properties of Recycled AA 6063 Using Energy-Efficient and Environment-Friendly Friction Stir Processing

2021 ◽  
Vol 943 (1) ◽  
pp. 012019
Author(s):  
G S Teo ◽  
K W Liew ◽  
C K Kok
Keyword(s):  
Aluminium Alloy ◽  
Tribological Properties ◽  
Friction Stir Processing ◽  
Environmental Sustainability ◽  
Rotational Speed ◽  
Energy Efficient ◽  
Surface Engineering ◽  
Surface Microhardness ◽  
Friction Stir ◽  
Engineering Technique

Abstract In this study, the surface microhardness, friction and wear performance of recycled aluminium alloy 6063 were improved via an energy-efficient surface engineering technique known as friction stir processing. Different tool rotational speeds of 1200 rpm, 1400 rpm, 1600 rpm, 1800 rpm and 2000 rpm with a fixed feed rate of 30 mm/min were used to process the recycled aluminium alloy 6063. The effects of rotational speed on the microstructure, surface microhardness and tribological performance of the samples were analyzed. The results show that the samples produced at a stirring speed of 1200 rpm achieved the greatest enhancement of 25 % in surface microhardness, 37 % in wear resistance and 33 % reduction in friction coefficient. This has significant implications for environmental sustainability as a relatively low rotational speed, hence a low energy input, is sufficient to enhance the surface properties of recycled aluminium alloy 6063. The benefits of superior tribological properties of recycled aluminium alloy afforded by such an energy-efficient surface engineering method include reduced exploitation of new resources, reduced carbon footprint, and enhanced product sustainability and durability.

Cladding of Tungsten Carbide and Stellite Using High Power Diode Laser to Improve the Surface Properties of Stainless Steel

2012 ◽  
Vol 585 ◽  
pp. 498-501 ◽  
Author(s):  
Raghuvir Singh ◽  
S.K. Tiwari ◽  
Suman K. Mishra
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Tungsten Carbide ◽  
Diode Laser ◽  
High Power ◽  
Surface Engineering ◽  
Industrial Applications ◽  
Engineering Technique ◽  
Power Diode ◽  
High Power Diode Laser

Surface engineering is one of the most viable methods, in addition to development of new alloys and equipment design, to minimize degradation due to cavitation erosion, and corrosion. Laser surface cladding is relatively a newer engineering technique to produce metallurgically bonded coating for industrial applications due to its inherent benefits. Present paper reports the results obtained on the laser cladding of stainless steel with tungsten carbide (WC) and stellite alloy powder using high power diode laser (HPDL) at various laser parameters. Cladded specimens were characterized for erosion, and corrosion resistance. Both WC and stellite cladding have increased the erosion resistance of stainless steels. WC cladding was found to reduce the corrosion resistance of steel while stellite showed it to increase significantly.

Friction Stir Processing: An Emerging Surface Engineering Technique

2020 ◽  
pp. 1-31 ◽  
Author(s):  
Padmakumar A. Bajakke ◽  
Sudhakar C. Jambagi ◽  
Vinayak R. Malik ◽  
Anand S. Deshpande
Keyword(s):  
Friction Stir Processing ◽  
Surface Engineering ◽  
Friction Stir ◽  
Engineering Technique

Surface engineering casebook

1996 ◽  
Author(s):  
J S Burnell-Gray ◽  
P K Datta
Keyword(s):  
Surface Engineering
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