- Material Performance
- Process Innovation, Development, and Additive Manufacturing
- Weldability Testing and Evaluation
- External Weld Repair of Coke Drums
- Induction Bending of Alloy 825 Overlays on Low-Alloy Carbon Steel
- Microstructural Evolution of INCONEL® Alloy 740H® Fusion Welds during Creep
- Optimal Composition Window of Type 410 Welding Consumables and Base Metals for Hydro-processing
- Solidification Crack Performance and Optimization of EN82H
You are here
Optimal Composition Window of Type 410 Welding Consumables and Base Metals for Hydro-processing
Type 410 martensitic stainless steel is currently used for its sulfide corrosion resistance in downstream hydro-processing installations and was chosen over austenitic stainless steels due to its superior resistance to halide and polyphonic acid stress corrosion cracking found in a hydro-processing environment. During fabrication, the welding of 410 base materials with generic E410 and ER 410 consumables resulted in insufficient weld properties such as cracking, loss of toughness and excessive hardness. This problem was overcome by the development of selection guidelines by Shell which recommended an increase in Ni content over Generic 410 consumables. Demand for a modified consumable has not been large enough for manufactures to economically produce sufficient quantities for Shell and has created a limited market. To circumvent this, there has been a push to refine the alloy window in a selection criterion to produce acceptable weld properties conducive to Shells’ applications.
This is currently being done through a model based DOE using ThermoCalc and Dictra while validating results through the use of SS-DTA, metallography, dilatometry and other techniques.
Industry Sponsor: Shell
Faculty: Boian Alexandrov (OSU)
Graduate Student: David Stone
Industry Contact: Jorge Penso