Optimization of Post-Weld Heat Treatment Process for Long-Term Used TP347 Pipe
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Key Points
Stabilization heat treatment effectively reduces residual stress in the weld seam of TP347 pipes, ensuring long-term performance.
Simulation demonstrated that higher heat treatment temperatures correlate with lower residual stress values up to 950°C, maintaining material integrity.
Welded samples were subjected to various tests, revealing increased grain size and precipitated phases post-heat treatment alongside concerns over tensile strength.
Corrosion testing indicated a higher crack propagation rate at elevated heat treatment temperatures, emphasizing the need for careful thermal management.
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Implication
Simulation shows stabilization heat treatment reduces residual stress in TP347 pipes, implying precise temperature control is crucial.