Microstructural and Mechanical Evolution of a Low Carbon Steel by Friction Stir Processing

Sekban, Dursun Murat; Aktarer, Semih Mahmut; Zhang, Hao; Xue, P.; Ma, Z.Y.; Pürçek, G.

doi:10.1007/s11661-017-4157-z

Cited by 19 publications

(9 citation statements)

References 52 publications

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“…Thus, this significant increase in the strength values of the steel cannot be fully attributed to the grain refinement. It was reported in an earlier study that Grade A steel that was processed by FSP and having 3 µm grain size showed lower tensile strength than the ECAP-processed sample of the present case [2,19]. It was stated that dynamic recrystallization occurred during the FSP due to the high temperature at the process region, and thus limited increase in the dislocation density occurred in the microstructure of the steel after FSP.…”

Section: Resultsmentioning

confidence: 60%

“…It was stated that dynamic recrystallization occurred during the FSP due to the high temperature at the process region, and thus limited increase in the dislocation density occurred in the microstructure of the steel after FSP. Therefore, increase in the strength of the steel was mainly attributed to the grain refinement while strain hardening effect was mentioned to be limited (Hall-Petch effect) [2,19]. On the other hand, the steel was processed at the cold deformation region in the present study since ECAP was applied to it at 200 °C.…”

Section: Resultsmentioning

confidence: 88%

“…It is well known that mechanical properties of low carbon steels can be optimized by heat treatment and/or imposing strain or decreasing grain size via plastic deformation techniques [2]. Besides the conventional plastic deformation techniques like rolling, extrusion and forging, severe plastic deformation (SPD) techniques have been proposed in recent years [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Processing of Grade a Low Carbon Steel by Equal Channel Angular Pressing

Demirtas¹

2020

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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The present study aims to analyze the effect of equal channel angular pressing (ECAP) on the microstructural and mechanical properties as well as the impact energy of low carbon steel. Grade A steel was processed using ECAP. One pass of ECAP did not cause a considerable decrease in the grain size of the steel. It brought about two different microstructures on the flow and transverse planes of an ECAP billet, instead. The microstructure consists of elongated ferrite and perlite grains aligned in a direction having mainly 45° angle with the extrusion direction on the flow plane while nearly equiaxed grains were formed on the transverse plane. These differences between the microstructures of two different planes of the ECAP sample are attributed to the share planes that are operative during ECAP. ECAP increased the hardness and strength values of the steel significantly due to the increase in the dislocation density during the process. However, it decreased the elongation to failure considerably. It was found that the impact energy of the ECAP-processed sample is dependent on the notch position of the Charpy impact test sample.

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Section: Resultsmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Processing of Grade a Low Carbon Steel by Equal Channel Angular Pressing

Demirtas¹

2020

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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“…A tungsten carbide (WC) tool with a convex shoulder and a cylindrical pin was used in this investigation. FSP was performed at a rotation speed of 630 rpm and 45 mm/min traverse speed [ 23 ]. Similarly, Wang et al [ 24 ] reported the formation of fine ferrite and cementite in friction stir processed high phosphorous mild steels SMA490AW and SPA-H, with a reduction of about eight times in average grain size as compared to the base material.…”

Section: Influence Of Fsp On Microstructure and Tensile Behavior Of Steelsmentioning

confidence: 99%

“…The influence of this technique on the microstructure of the material has been studied by several researchers [19][20][21]. The influence of FSP on microstructure and tensile behavior of low carbon steel is presented in two separate studies [22,23]. Ultrafine grains with dual-phase structure were achieved using FSP under rapid water cooling for low carbon steel, giving it an enormous improvement in tensile and yield strengths while compromising its ductility.…”

Section: Influence Of Fsp On Microstructure and Tensile Behavior Of Steelsmentioning

confidence: 99%

Friction Stir Processing Influence on Microstructure, Mechanical, and Corrosion Behavior of Steels: A Review

et al. 2021

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Friction stir processing (FSP) technology has received reasonable attention in the past two decades to process a wide range of materials such as aluminum, magnesium, titanium, steel, and superalloys. Due to its thermomechanical processing nature, FSP is used to alter grain structure and enhance mechanical and corrosion behavior in a wide range of steels. The refinement in grains and phase transformations achieved in steel after FSP affects hardness, tensile properties, fracture toughness, fatigue crack propagation rate, wear resistance, and corrosion resistance. A number of review papers are available on friction stir welding (FSW) or FSP of nonferrous alloys. In this article, a comprehensive literature review on the FSP/FSW of different types of steels is summarized. Specifically, the influence of friction stir processing parameters such as advancing speed, rotational speed, tool material, etc., on steels’ performance is discussed along with assessment methodologies and recommendations.

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