A5103086306- High Temperature Alloys and Creep
- Microstructure and Mechanical Properties of Steels
- Welding Techniques and Residual Stresses
- High-Temperature Coating Behaviors
- Metal Alloys Wear and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Intermetallics and Advanced Alloy Properties
- Advanced materials and composites
- Aluminum Alloy Microstructure Properties
- Nuclear Materials and Properties
- Erosion and Abrasive Machining
- Metallurgical Processes and Thermodynamics
- Additive Manufacturing Materials and Processes
- Advanced Materials Characterization Techniques
- Fusion materials and technologies
- Advanced Welding Techniques Analysis
- Corrosion Behavior and Inhibition
- Solidification and crystal growth phenomena
- Nuclear reactor physics and engineering
- Microstructure and mechanical properties
- Metallurgical and Alloy Processes
- High Entropy Alloys Studies
- Fatigue and fracture mechanics
- Manufacturing Process and Optimization
- Metal and Thin Film Mechanics
Lehigh University
2015-2024
Mississippi State University
2017
Materials Science & Engineering
1996-2006
Sandia National Laboratories California
2005
Henry Morrison Flagler Museum
2004
Oak Ridge National Laboratory
1997
Sandia National Laboratories
1997
Bethlehem Area School District
1994
Dissimilar metal welds between ferritic and austenitic alloys are used extensively in power plants. Premature failure of such can occur below the expected creep life either base metal. This article reviews microstructural evolution dissimilar describes factors that contribute to premature failure. The microstructure as welded condition consists a sharp chemical concentration gradient across fusion line. Martensite forms within this due high hardenability rapid cooling rates from welding....
Super austenitic stainless steels are often welded using high Mo, Ni base filler metals to maintain the corrosion resistance of weld. An important aspect this processing is weld metal dilution level, which will control composition and resultant In addition, distribution alloying elements within also significantly affect resistance. Dissimilar welds between a super steel (AL-6XN) two alloys (IN625 IN622) were characterised with respect their levels microsegregation patterns. Single pass...
Fossil fuel will continue to be the major source of energy for foreseeable future. To meet demand clean and affordable energy, an increase in operating efficiency fossil fired power plants is necessary. There are several initiatives worldwide achieve efficiencies >45% higher heating value (HHV) through steam temperature (700 760°C) pressure (27.6 34.5 MPa). Realising this goal requires materials with excellent creep rupture properties corrosion resistance at elevated temperatures. In...
Fossil fuel will continue to be the major source of energy for foreseeable future. To meet demand clean and affordable energy, an increase in operating efficiency fossil fired power plants is necessary. There are several initiatives worldwide achieve efficiencies >45%HHV (higher heating value) through steam temperature (700–760°C) pressure (27.6–34.5 MPa). Realising this goal requires materials with excellent creep rupture properties corrosion resistance at elevated temperatures. Two...