Transformation in Stir Zone of Friction Stir Welded Carbon Steels with Different Carbon Contents
- 1 January 2007
- journal article
- Published by Iron and Steel Institute of Japan in ISIJ International
- Vol. 47 (2), 299-306
- https://doi.org/10.2355/isijinternational.47.299
Abstract
Five types of ferrite–pearlite structure carbon steels with different carbon contents (IF steel, S12C, S20C, S35C, S50C) were friction stir welded under various welding conditions, and the mechanical properties and microstructures of the FSW carbon steel joints were evaluated. Compared with IF steel, the microstructures and mechanical properties of the carbon steel joints are significantly affected by the welding conditions. When the carbon content is less than or equal to 0.12 mass%, the welding produces ferrite–pearlite structures, and the strength slightly increases compared to the base metal due to the refined microstructure; when the carbon content is above 0.2 mass%, the welding produces ferrite–pearlite plus harder phases like the martensite and bainite microstructures, resulting in a significantly increased strength of the joints. These are dependent on each of the thermal-mechanical cycles.Keywords
This publication has 13 references indexed in Scilit:
- Friction Stir Welding of Ultrafine Grained Interstitial Free SteelsMATERIALS TRANSACTIONS, 2006
- Microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steelMaterials Science and Engineering: A, 2005
- Microstructures and mechanical properties of friction stir welds of 60% Cu–40% Zn copper alloyMaterials Science and Engineering: A, 2004
- Numerical simulation of transient temperature and residual stresses in friction stir welding of 304L stainless steelJournal of the American Academy of Dermatology, 2004
- Rapid formation of the sigma phase in 304 stainless steel during friction stir weldingScripta Materialia, 2003
- Friction stir welding of DH36 steelScience and Technology of Welding and Joining, 2003
- Effect of micro-texture on fracture location in friction stir weld of Mg alloy AZ61 during tensile testScripta Materialia, 2003
- Structure, properties, and residual stress of 304L stainless steel friction stir weldsScripta Materialia, 2003
- Cementite decomposition in heavily drawn pearlite steel wireScripta Materialia, 2001
- Feasibility of friction stir welding steelScience and Technology of Welding and Joining, 1999