· 2015
Welding Metallurgy of Stainless Steels
- 338citations
- 2015year
Short summary
Excessive base metal dilution during welding of austenitic stainless steels can increase susceptibility to solidification cracking.
AI-generated from the title and abstract; the full text is not read.
Key points
- Stainless steels are classified into five main alloy families based on their dominant microstructure.
- Constitution diagrams predict weld microstructure by analyzing alloying elements.
- Dilution of filler metal by base metal is critical in welding certain stainless steels.
- Excessive base metal dilution in austenitic stainless steels increases solidification cracking susceptibility.
AI-generated from the title and abstract; the full text is not read.
Abstract
Stainless steels are generally grouped into five distinct alloy families and are primarily classified by the phase that dominates the microstructure. The five families of stainless steels are martensitic, ferritic, austenitic, duplex, and precipitation hardened. Duplex stainless steels consist of a nearly equal mixture of ferrite and austenite, while the PH stainless steels can be either martensitic or austenitic. A constitution diagram predicts the microstructure of the stainless steel based on the type and amount of various alloying elements. Dilution of the filler metal by the base metal is often an important consideration when welding certain stainless steels. This chapter discusses excessive base metal dilution in austenitic stainless steels that is known to increase the susceptibility to solidification cracking. Constitution diagrams are a powerful tool for predicting stainless steel weld microstructures, and therefore, anticipating potential weldability problems.
The authors' abstract, as published at the source., 2015 · DOI ↗
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Field: Metals and Alloys
Metals and AlloysMaterials Science