M. P. Satish Kumar and P. Bala Srinivasan:
Characterisation of a low hydrogen electrode - role of coating factor on the welding performance and resultant properties
Low hydrogen electrode, coating factor, tensile strength, impact toughness, corrosion behaviour
Low hydrogen electrodes corresponding to E7018 were produced with three different coating factors. The effect of coating factor on the performance of the welding electrode and properties of resultant weldments was assessed. Midst the low (LCF- 1.575), medium (MCF-1.770) and high (HCF-2.075) coating factor electrodes produced, the HCF electrode offered better shielding effect; however, it did not provide the best toughness. The relatively inferior impact properties of HCF welds are on account of inclusions, arising from higher quantum of slag,
Kumkum Banerjee:
Evolution of annealing texture in Ti-stabilized interstitial free steel
Textural and microstructural investigation, cold rolled and batch annealed Ti-stabilized interstitial-free steel
Cold rolled and batch annealed Ti-stabilized interstitial-free grade steels have been used for textural and microstructural investigation. The a-fibre in the steel, detrimental to deep drawing applications, has been found to be strong even after batch annealing. This has been attributed to the inheritance of the strength of the fibre from the hot band. The presence of a stronger recrystallization texture in the surface region than in the central region has been accounted for by the deformation and orientation path
Xiao-Ping Zhou:
Microstructures and properties of cermet coating on surface of H13 steel applied by vacuum powder sintering
Cermet, ternary boride, vacuum powder sintering, surface coating, H13steel
In this paper the microstructures and properties of ternary boride (Mo2FeB2) based cermet coating on the surface of H13 steel applied by vacuum powder sintering are studied. Effects of sintering technology on the microstructures of the coating are discussed. The interface characteristics between coating and steel substrate, the microhardness distribution and wear resistance in the coating are analysed. The results indicate that the ternary boride-based cermet coatings with a thickness of 1.5 mm are obtained by reaction sintering at 1220
Rajeev Baskiyar, Umesh Prasad Singh, Ganti Mahapatruni Dakshina Murty and Jagdish Singh:
Evolution of the temperature profile of a controlled cooled rod section under varying durations of water quenching
Long products, rod, finite element method, controlled cooling, temperature, heat transfer
The paper attempts at simulating the temperature profile of a rod section subject to water quenching, which constitutes a part
of the controlled cooling technique that comprises quenching and self-tempering (QST) processes. Use has been made of a
finite element method (FEM) based model for solving the heat transfer equations. The impact of varying the duration of water
cooling while achieving the same targeted microstructure has been analyzed. The analysis brings to fore several key issues
that are vital to
A. Shyamsundar Reddy, K. Asokkumar, and P. Bala Srinivasan:
Studies on the erosion resistant HVOF Ni-Cr-Cr3C2 coatings for boiler tubes
Boiler steels, coatings, microstructure, erosion resistance
The applicability of NiCr-Cr3C2 coating by high-velocity-oxy-fuel (HVOF) thermal spray technique for imparting the elevated temperature erosive wear resistance to 1Cr-0.5Mo boiler grade steel was attempted in this work. It was observed that deposits to the thickness level of about 300 m could be built on these substrates by HVOF, with acceptable bond strength and quality. The elevated temperature erosive wear tests performed at 420 °C with bed-ash particles as erodent revealed that this NiCr-Cr3C2 HVOF coating can offer excellent
Antonella Dimatteo, Massimo De Sanctis, Gianfranco Lovicu, Adriano Solina, and Renzo Valentini:
Effect of plastic deformation and alloying elements on the continuous cooling microstructures of HSLA steels
HSLA steel, niobium, boron, bainitic ferrite, acicular ferrite, CCT curves
Thermomechanical simulator Gleeble 3800 was used to simulate controlled hot rolling followed by a controlled cooling of some experimental heats of low-carbon Al-killed HSLA steels containing additions of different alloying elements to enhance hardenability. The continuous cooling transformation diagrams of both undeformed and thermomechanically-worked steels were monitored by dilatometry. The resultant microstructures ranged from polygonal ferrite for combinations of slow cooling rates and low alloying element contents, through to bainitic ferrite for fast cooling rates and high concentrations of alloying
Kejing Li, Daryush Aidun, and Pier Marzocca:
Modelling of the mixed weld zone of dissimilar metal joints by functionally graded materials
Finite element modelling; functionally graded material; thermal modelling dissimilar materials
Welding dissimilar metals with very different properties, such as aluminium and steel, is considered to be a very necessary field of research in the mechanical and aerospace area. To provide a better understanding of the mechanical properties of the mixed weld zone, a two-dimensional finite element modelling of dissimilar material joints directed toward the investigation of thermal residual stresses has been considered in this paper. The objective of this research work is manifold: first, to offer an understanding of the
RSS feed
| 
top of page
All external sites will open in a new browser.