IIT Indore Researchers Achieve Global Recognition with Advanced Manufacturing Study Published in Tribology International
The publication of this study in Tribology International highlights the growing global impact of Indian engineering research. By successfully developing a functionally continuous gradient material through WAAM-TIG technology, the IIT Indore team has demonstrated an innovative solution to one of manufacturing’s longstanding challenges—joining dissimilar metals without compromising performance. This achievement has the potential to influence future developments in aerospace, defense, energy, and other high-performance industries.
New Delhi: A team of researchers from the Department of Mechanical Engineering at the Indian Institute of Technology (IIT) Indore has earned international recognition after their pioneering research on advanced metal manufacturing was published in the prestigious journal Tribology International. The study presents an innovative method for producing a Functionally Continuous Gradient Material (FCGM) by combining Inconel 718 (IN718) and Titanium Alloy Ti6Al4V using the Dual Wire Wire Arc Additive Manufacturing–Tungsten Inert Gas (WAAM-TIG) process. The publication marks an important contribution to the rapidly evolving field of additive manufacturing and advanced materials engineering.
The research paper, titled “Development of IN718–Ti6Al4V Functionally Continuous Gradient Material by Dual Wire WAAM-TIG and Its Tribo-Mechanical Characteristics,” has been authored by Mukulananad Jha, Arun Kumar Singh, Shubham Sadhya, and Yuvraj K. Madhukar. Their work focuses on creating a next-generation hybrid material capable of delivering superior strength, wear resistance, and durability for demanding engineering applications.
A Milestone for Indian Engineering Research
The publication of this research in Tribology International represents a significant achievement for Mukulananad Jha, Arun Kumar Singh, Shubham Sadhya, and Yuvraj K. Madhukar. Their successful development of a functionally continuous gradient material using WAAM-TIG technology demonstrates India’s growing expertise in advanced manufacturing. The accomplishment highlights IIT Indore’s expanding role in global engineering research and showcases how Indian scientists are addressing complex industrial challenges through innovative material design.
Solving a Long-Standing Manufacturing Challenge
Joining two different engineering metals has traditionally been one of the biggest challenges in manufacturing. Conventional welding often creates sharp interfaces that can weaken components under high temperatures or heavy mechanical loads.
To overcome this limitation, the IIT Indore researchers developed a material in which the composition gradually changes from Inconel 718 to Ti6Al4V instead of creating an abrupt joint. This smooth transition minimizes stress concentrations while improving structural integrity and overall performance.
Why These Two Alloys?
The research combines two of the world’s most widely used engineering alloys.
Inconel 718 is a nickel-based superalloy known for its outstanding resistance to heat, oxidation, and corrosion, making it ideal for jet engines, gas turbines, and high-temperature industrial equipment.
Ti6Al4V, meanwhile, is valued for its lightweight characteristics, exceptional strength-to-weight ratio, and corrosion resistance. It is commonly used in aerospace structures, medical implants, and defense equipment.
By integrating the strengths of both materials into a single component, the researchers have opened new possibilities for manufacturing high-performance engineering parts.
Advanced WAAM-TIG Manufacturing Process
The study utilizes Dual Wire Wire Arc Additive Manufacturing using Tungsten Inert Gas (WAAM-TIG), an advanced metal additive manufacturing technique that builds components layer by layer using metallic wires.
Compared with conventional machining and fabrication methods, WAAM-TIG offers several advantages:
- Reduced material wastage
- Lower manufacturing costs
- Faster production
- High deposition rates
- Capability to fabricate large and complex components
The dual-wire configuration also enables precise control over material composition during fabrication, making continuous gradient structures possible.
Evaluating Tribo-Mechanical Performance
To validate the newly developed material, the research team conducted extensive testing on its tribo-mechanical properties.
The investigation examined:
- Microstructure
- Hardness
- Mechanical strength
- Wear resistance
- Friction behaviour
- Bonding quality between both alloys
The results demonstrated a stable metallurgical transition between the two metals along with improved hardness and enhanced resistance to wear, suggesting strong potential for industrial applications.
Importance of Tribology
Tribology—the science of friction, wear, and lubrication—plays a critical role in modern engineering.
Every engine, gearbox, turbine, bearing, and rotating machine component experiences friction during operation. Improving wear resistance directly contributes to longer service life, lower maintenance costs, improved efficiency, and greater reliability.
The newly developed gradient material showed promising tribological characteristics that could benefit several industries requiring durable components under demanding operating conditions.
Wide Range of Industrial Applications
According to the researchers, the developed material could find future applications in several sectors, including:
- Aerospace and aviation
- Space exploration
- Defense manufacturing
- Automotive engineering
- Power generation
- Heavy industrial machinery
These industries increasingly demand lightweight yet durable materials capable of operating under extreme temperatures and continuous mechanical stress.
Strengthening India’s Position in Additive Manufacturing
The publication further reinforces India’s growing presence in advanced manufacturing research. As industries worldwide adopt additive manufacturing technologies, innovations such as this are expected to play an important role in producing stronger, lighter, and more efficient engineering components.
The study also demonstrates how academic research can contribute to solving practical industrial challenges while promoting sustainable manufacturing through reduced material waste and optimized production techniques.
Looking Ahead
Functionally graded materials are expected to become an integral part of future manufacturing technologies. Further research may focus on improving fatigue performance, optimizing manufacturing parameters, and expanding industrial-scale production.
With this achievement, the IIT Indore research team has added another significant contribution to the global advancement of additive manufacturing and materials engineering, strengthening India’s reputation in cutting-edge scientific research.
