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Topic Review
Sn on Ag-Based Brazing Filler Metals
Ag-based brazing filler metals containing Sn have been widely applied in many engineering fields. By summarizing the effects of Sn on the melting temperature, wettability and microstructure, and mechanical properties of the filler metals, the Sn element can significantly decrease the melting point and improve the wettability, and proper addition of Sn can optimize the microstructure and improve the comprehensive properties of the filler metals, while excessive addition of Sn will form brittle IMCs and decrease the mechanical properties of the filler metals.
  • 716
  • 29 Nov 2021
Topic Review
Solid-State Welding of Steels
Welding is a joining process that permanently connects solid parts and forms components that cannot be divided without causing damage. Furthermore, welding is the most efficient and economical way to join similar or dissimilar materials with or without using filler material, heat, or external pressure. Welding can be processed in a variety of environments, including outdoors, inside, underwater, and even in outer space. The two main categories of welding methods, solid-state welding (SSW) and fusion welding, are processes to join metals. Fusion welding can be defined as the melting process of parent materials on facing surfaces with a filler material to form a weld bead. The fusion welding process comprises gas welding, arc welding, and intense-energy beam welding.
  • 679
  • 06 Jan 2023
Topic Review
Steel Structural Property Correlation
The behaviour of plain carbon, as well as, structural steel is qualitatively different at different regimes of strain rates and temperature when they are subjected to hot-working and impact-loading conditions. Ambient temperature and carbon content are the leading factors governing the deformation behaviour and substructural evolution of these steels.
  • 947
  • 29 Jul 2022
Topic Review
Stir Casting Routes for Metal Matrix Syntactic Foams
Metal matrix syntactic foams (MMSFs) are advanced lightweight materials constituted by a metallic matrix and a dispersion of hollow and/or porous fillers. Physical and mechanical properties can be fitted regarding matrix and filler properties and processing parameters. Their properties make them potential materials for sectors where density is a limiting parameter, such as transport, marine, defense, aerospace, and engineering applications. MMSFs are mainly manufactured by powder metallurgy, infiltration, and stir casting techniques. Stir casting techniques (SCTs) are low-cost and industrially scalable approaches. Critical limitations of SCTs are buoyancy of fillers, corrosion of processing equipment, premature solidification of molten metal during mixing, cracking of fillers, heterogeneous distribution, and limited incorporation of fillers. Efforts to overcome these limitations have led to the development of new techniques and to obtain MMSFs with improved properties.
  • 520
  • 19 Apr 2022
Topic Review
The γ” Phase in Mg-RE-TM Alloys
In magnesium–rare earth–transition metal (Mg-RE-TM) alloys, the γ” phase (with a hexagonal structure with the space group P6¯2m) is a critical strengthening phase that can significantly improve their mechanical properties. However, compared to other phases in Mg-RE-TM alloys, research on the γ” phase is less documented, and an understanding of the γ” phase is not well established
  • 238
  • 22 Nov 2023
Topic Review
TiN Coating on Drawing Force and Friction Coefficient
The influence of various process parameters on the deep drawing process is a current research topic in sheet metal forming technology. Starting from the application of the previously constructed original testing device, an original tribological model was developed based on the process of sheet metal strip sliding between flat contact surfaces under variable pressures. A complex experiment was executed using an Al alloy sheet, tool contact surfaces of different roughness, two types of lubricants and variable contact pressures.
  • 259
  • 08 Jun 2023
Topic Review
Trends and Challenges in the Indian Steel Industry
India is the 4th largest iron ore producer and the 3rd largest coal producer in the world. Coal is also identified as one of the major sectors of “Make in India”, which is an initiative by the Government of India launched by the prime minister. India is also the world’s largest producer of sponge iron: about 37 million tons per annum. 
  • 562
  • 22 Apr 2022
Topic Review
Tribocorrosion Behavior of Aluminum Alloys
Tribocorrosion is a material degradation process caused by the combined effect of wear and corrosion. The complexity of tribocorrosion lies in the fact that the chemical and mechanical attacks are not independent of each other but often act synergistically to cause accelerated failure.
  • 377
  • 26 Oct 2023
Topic Review
Tribological Behavior of Additively Manufactured Metal Components
Additive manufacturing (AM) has rapidly become a mainstream method of industrial production. Due to the involved layer-by-layer deposition, the amount of waste material can be limited, drastically reducing overall cost and conserving resources, unlike subtractive methods of manufacturing.
  • 399
  • 22 Nov 2022
Topic Review
Tribology of HEAs Prepared by Spark Plasma Sintering
High-entropy alloys (HEAs) are prospective advanced materials for the production of components that operate at high, severe friction and in high-temperature environments. This is because they possess unique properties requisite for such applications. The tribology of HEAs is described. The exploits of wear-resistant HEAs, the development techniques of wear-resistant HEAs, challenges in developing wear-resistant HEAs, and so on, are included.
  • 663
  • 12 Jan 2024
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