A5044658517- Welding Techniques and Residual Stresses
- Microstructure and Mechanical Properties of Steels
- High Temperature Alloys and Creep
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Welding Techniques Analysis
- Titanium Alloys Microstructure and Properties
- Fatigue and fracture mechanics
- Aluminum Alloy Microstructure Properties
- Non-Destructive Testing Techniques
- High-Temperature Coating Behaviors
- Fusion materials and technologies
- Superconducting Materials and Applications
- Advanced Surface Polishing Techniques
- Advanced Materials Characterization Techniques
- Advanced machining processes and optimization
- Metal and Thin Film Mechanics
- Nuclear Materials and Properties
- Microstructure and mechanical properties
- MXene and MAX Phase Materials
- Metallurgy and Material Forming
- X-ray Diffraction in Crystallography
- High Entropy Alloys Studies
- Subcritical and Supercritical Water Processes
- Metal Alloys Wear and Properties
- Intermetallics and Advanced Alloy Properties
Indira Gandhi Centre for Atomic Research
2013-2024
Residual stresses are created by localised heating effects that occur during the welding process. Post weld heat treatment (PWHT) is most convenient method for stress relief of welds. But PWHT cannot completely eliminate residual stresses. So, it essential to determine influence parameters like holding temperature and time on relaxation optimising The selected material modified 9Cr-1Mo (Grade 91) steel in form plates welded together using a high intensity electron beam. To facilitate study,...
This paper is a research output of DMW-Creep project which part national UK programme through the RCUK Energy and India's Department Atomic Energy. The focussed on understanding characteristics welded joints between austenitic stainless steel ferritic that are widely used in many nuclear power generating plants petrochemical industries as well conventional coal gas-fired systems. members have undertaken parallel round robin activities measuring residual stresses generated by dissimilar metal...
Distribution of weld-induced residual stress plays a significant effect on the service life welded component. The accumulation high accelerates crack propagation even if is microscopic level, reducing Prior understanding distribution can aid in design component with an adequate factor safety and reduce probability failure. In present study, two separate circumferential butt pipes were fabricated using Alloy 617 then subjected to post weld heat treatment) at 720°C 980°C. deep hole drilling...
Studies on the weldability of 17-4PH stainless steel, in 621°C overaged condition, showed that Cr eq /Ni ratio higher than 1·5 resulted primary ferritic mode solidification weld metal. Post-weld aging treatment at 482°C enhanced strength joint with corresponding reduction impact toughness metal while post-weld caused marginal significant increase
Abstract Friction welding of commercially pure titanium to austenitic stainless steel (AISI 304L SS) using intermediate layers was studied. The interlayers used were nickel, tantalum and vanadium in the form thin foils. aimed at avoiding direct contact between base materials which may otherwise lead formation mainly Ti-Fe intermetallic phases interface seriously affect weld properties. Interlayer foils individually combination (nickeltantalum nickel-vanadium) suitably called present work as...
Type 316LN stainless steel (SS) is used as a major structural material in the construction of fast breeder reactor (FBR) India. For fabrication various components from thick SS plates, extensive machining often necessary. It known that can introduce residual stresses and affect dimensional stability service at high temperature 550°C (823 K). this, effect on stress distribution was studied type plate material. The introduced surfaces by two different sequences are measured compared with...
In the present study, lattice misfit and strain of γ γ΄ phases in Alloy 617 aged at 700 °C have been studied using XRD correlated with FESEM TEM microstructure. Aged showed presence fine uniformly distributed γ´-Ni 3 (Al, Ti) precipitates within grains (γ-matrix) along carbides predominantly grain boundaries. Lattice γ/γ΄ calculated specimens revealed that is negative for 100 h 1000 samples it changes to positive 4000 aging time. The was evaluated by Stephen's phenomenological method...
Weldability of Ti–4.8%Ta–1.8%Nb alloy, for use in electrolytic dissolver nuclear fuel reprocessing plant, was evaluated autogenous bead-on-plate gas tungsten arc welds made at two different heat inputs. Pure titanium also welded comparison. A secondary shielding setup employed protection the weldment from gaseous contamination during and after welding. In weld heat-affected zone (HAZ) Ti-Ta-Nb weldments, plate-like martensite, characteristic cooling rates welding, observed. Low input slower...