Contents
- Hydrogen Delayed Fracture in Ocean Plants
- Hot-rolled Automotive Steels of Giga Strength and HER
- New Nitriding Coating Technology to Enhance Wear Property
- Alloy Design and Microstructure Prediction of Cr-Mo Steel Welds
- Microjoining of Pb-free Solders and TLP Technology
- Weldability of Laser Beam and Friction Stir Welds of High Entropy Alloy
Hydrogen Delayed Fracture in Ocean Plants
Issue | Objective |
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Key Technology
- Establish the HISC evaluation technology on the weldment of offshore top-side structures
- Develop the new welding technology to improve CTOD and impact toughness
- Progressive steps:
- Welding technology to produce HISC resistance
- CTOD & impact toughness in dissimilar weldment
- New HISC evaluation technology
- Total solution map on HISC
Hot-rolled Automotive Steels of Giga Strength and HER
Issue | Objective |
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Key Technology
New Nitriding Coating Technology to Enhance Wear Property
Issue | Objective |
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Key Technology
Alloy Design and Microstructure Prediction of Cr-Mo Steel Welds
Issue | Objective |
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Key Technology
- Improvement of high temperature properties of weld metal by control of delta ferrite and precipitates
- Analysis of the influence of welding conditions on delta ferrite fraction
- Prediction of delta-ferrite formation position in weld metal by FEA simulation
- Weld metal alloy design by thermodynamic simulation (Thermo-Calc)
- Optimization of post weld heat treatment and analysis of precipitates
Microjoining of Pb-free Solders and TLP Technology
Issue | Objective |
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Key Technology
- Evaluating the joint properties using the creep and bending tests under various conditions like high temperature and humidity with microstructural analysis
- Developing the new TLP bonding materials and bonding conditions for high-temperature operation
- Measuring the IMC growth under various conditions and analyzing the bonding mechanism
Weldability of Laser Beam and Friction Stir Welds of High Entropy Alloy
Issue | Objective |
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Key Technology
- Application of LBW and FSW
- Low heat input welding / solid-state process (no melting)
- Development of new filler metals for welding HEAs