Friction stir welding of ultrafine grained plain low-carbon steel formed by the martensite process

Ueji, Rintaro; Fujii, Hidetoshi; Cui, Ling; Nishioka, A.; Kunishige, Kazutoshi; Nogi, Kiyoshi

doi:10.1016/j.msea.2006.02.038

Cited by 124 publications

(66 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Friction stir welding has been done on mild steels with an untempered martensitic microstructure, and with the latter following a 35% cold-rolling deformation (Alloy 11, Table 3, [182]), using a variety of tool rotation speeds.…”

Section: Fsw Of Martensite In Mild Steelmentioning

confidence: 99%

Recent advances in friction-stir welding – Process, weldment structure and properties

Nandan

DebRoy

Bhadeshia

2008

Progress in Materials Science

1,810

911

View full text Add to dashboard Cite

Friction stir welding is a refreshing approach to the joining of metals. Although originally intended for aluminium alloys, reach of FSW has now extended to a variety of materials including steels and polymers. This review deals with the fundamental understanding of the process and its metallurgical consequences. The focus is on heat generation, heat transfer and plastic flow during welding, elements of tool design, understanding defect formation and the structure and properties of the welded materials.

show abstract

Section: Fsw Of Martensite In Mild Steelmentioning

confidence: 99%

Recent advances in friction-stir welding – Process, weldment structure and properties

Nandan

DebRoy

Bhadeshia

2008

Progress in Materials Science

1,810

911

View full text Add to dashboard Cite

show abstract

“…As for ferrous materials, few studies have investigated the FSW of interstitial free steel 7) (IF steel: 20 ppm C), carbon steel, 8) and stainless steel. 9) They reported that the FSW caused grain refinement in the stir zone (SZ) of the steel.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Features and Erosion Wear Resistance of Friction Stir Surface Hardened Spheroidal Graphite Cast Iron

2012

View full text Add to dashboard Cite

A ferritic spheroidal graphite cast iron (also named as SG cast iron, ductile cast iron, ductile iron) was treated with friction stir process (FSP) to harden the surface layer owing to a unique microstructure into which the ferritic structure transforms after high temperature deformation and subsequent direct cooling. When the friction stirred surface experiences thermomechanical cycle during FSP (here named friction stir surface hardening, FSSH), a non-traditional bainite structure can be obtained through subsequent cooling process. The bainite structure primarily consists of iron carbide (Fe 3 C), acicular ferrite and martensite with retained austenite aggregates. It is evident that the FSSH structure caused by deformation at austenite temperature has resulted in a significant increase in the microhardness of about 1000 HV yielding a primarily martensitic accompanying bainitic phase transformation. The experimental results also show that the process has resulted in significant improvement in erosion resistance at low angle impingement than that of ferritic specimens. In addition, the maximum erosion rate of ferritic specimens occurs at 2025°of impact while the peak of the FSSH specimen shifts to higher angle resulting from the formation of continuously cooled martensitic and bainitic structure.

show abstract

“…[2][3][4] After the initial trial for the higher temperature materials was successful by Thomas et al,5) several previous studies have reported the friction stir welding of interstitial free steel (IF steel: 20 ppm C), [6][7][8] carbon steels, [9][10][11][12][13][14][15] alloy steels, 16) and stainless steels. [17][18][19][20][21][22] Lienert et al 9) and Reynolds et al 10) studied one kind of carbon steel-the 1018 steel (0.18%C-0.01%Si-0.82%Mn-0.011%P-0.006%S) and a C-Mn steel (0.18%C-0.10-0.50%Si-0.9-1.6%Mn-0.035%P-0.035 %S) respectively.…”

Section: Introductionmentioning

confidence: 99%

Transformation in Stir Zone of Friction Stir Welded Carbon Steels with Different Carbon Contents

et al. 2007

View full text Add to dashboard Cite

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.

show abstract

Friction stir welding of ultrafine grained plain low-carbon steel formed by the martensite process

Cited by 124 publications

References 15 publications

Recent advances in friction-stir welding – Process, weldment structure and properties

Recent advances in friction-stir welding – Process, weldment structure and properties

Microstructural Features and Erosion Wear Resistance of Friction Stir Surface Hardened Spheroidal Graphite Cast Iron

Transformation in Stir Zone of Friction Stir Welded Carbon Steels with Different Carbon Contents

Contact Info

Product

Resources

About