High-temperature tensile properties of 316H stainless steel welded joints during long-term thermal exposure
The microstructure and tensile properties of TIG-welded 316H joints after aging at 600 °C for up to 2000 hours were investigated. In base metal (BM), M23C6 carbides precipitated along grain boundaries after 500 hours and coarsened, while in weld metal (WM), δ-ferrite decomposed into M23C6 within 100 hours. The faster a...