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Hydrogen embrittlement in heat affected zone of a welded sheet of precipitation hardening martensitic stainless steel.
| Content Provider | CiteSeerX |
|---|---|
| Author | S. Sakhawat *a. A. Falahati, A. K. Spiradek, B. H. P. Degischer, A. |
| Abstract | Precipitation-hardened stainless steels offer high strength, relatively good ductility, and excellent corrosion resistance. The precipitation hardening material type DIN 1.4542 is a martensitic stainless steel containing approximately 3.3 wt. % Cu and is strengthened by the precipitation of copper in the martensite matrix. Hydrogen assisted cracks generated in the heat-affected zone (HAZ) of solution treated and welded samples have been investigated. Metallography, hardness measurements (HV), radiography, electron back scattering diffraction technique (EBSD), transmission electron microscopy (TEM) and fractography methods are used to characterize HAZ of a tungsten inert gas (TIG) weldment of thin sheets. The heat input produced precipitates in a narrow region of the HAZ. In the same region cracks are observed, the origin of which appears to be hydrogen embrittlement. Hydrogen loading tests are performed to quantify the susceptibility of material to hydrogen embrittlement. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Hydrogen Embrittlement Heat Affected Zone High Strength Thin Sheet Precipitation-hardened Stainless Steel Narrow Region Material Type Din Diffraction Technique Good Ductility Tungsten Inert Gas Transmission Electron Microscopy Excellent Corrosion Resistance Martensitic Stainless Steel Region Crack Heat Input Martensite Matrix Heat-affected Zone Hydrogen Embrittlement Hydrogen Loading Test Hardness Measurement |
| Content Type | Text |
