Enhanced mechanical properties of medium carbon steel casting via friction stir processing and subsequent annealing

Xue, P.; Li, W.D.; Wang, D.; Wang, W.G.; Xiao, B.L.; Ma, Zheng

doi:10.1016/j.msea.2016.06.014

Cited by 35 publications

(8 citation statements)

References 22 publications

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“…As previously stated, hardness and strength increased significantly after FSP, especially within the SZ. This increase in hardness increases the resistance to plastic deformation during wear and thus increases the wear resistance of the material [46,47].…”

Section: Wear Testmentioning

confidence: 99%

Studying the impact of multi-pass friction stir processing on microstructure and mechanical properties of low-carbon steel

Moradi¹,

Khalaj²,

Ghaffari³

et al. 2023

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In this study, plain carbon steel (A216-WCB) was processed using a WC tool with a plunge depth of 2 mm, an advancing speed of 80 mm min −1 , and a rotational speed of 2800 rpm. Friction stir processing (FSP) was performed from one to three passes submerged under water at 5 • C. Field emission scanning electron microscope (FESEM) equipped with energy dispersive spectroscopy (EDS) and optical microscope (OM), Vickers microhardness (Hv), tensile and wear tests were used to characterize the FSPed samples. The initial grain size of the base metal (BM) was reduced from 25 µm to 3 and 5 µm in the stirred zone (SZ) and thermomechanically affected zone (TMAZ), respectively. The microhardness increased by a factor of 4.5 and 2.5 in SZ and TMAZ compared to the BM. This may be due to phase transformation (austenite to martensite) and grain size refinement according to the Hall-Petch equation. The ultimate tensile strength was improved by 23.9 % compared to BM, which may be due to increased grain boundaries that inhibit dislocation motion. The FSPed sample had 250 % more resistance to weight loss compared to BM. The increase in wear resistance may be attributed to the increase in microhardness and fine grain structures. Increasing the number of passes had the opposite effect on hardness, tensile strength, and wear resistance because the heat generated in subsequent passes leads to partial tempering of shear structures and recrystallization. K e y w o r d s : friction stir processing, phase transformation, cone valves, ball valves, cast steel, pipelines

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Section: Wear Testmentioning

confidence: 99%

Studying the impact of multi-pass friction stir processing on microstructure and mechanical properties of low-carbon steel

Moradi¹,

Khalaj²,

Ghaffari³

et al. 2023

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“…Recently, welded cast metals have gained increasing interests into scientific and engineering communities. In order to effectively join large‐sized structures such as these, various welding methods have been developed during the past several decades . However, the welding process can subject materials to nonuniform thermal cycles, which, in turn, can induce significant changes in microstructures and mechanical strength as well as the fatigue behaviours of final components …”

Section: Introductionmentioning

confidence: 99%

“…In order to effectively join large-sized structures such as these, various welding methods have been developed during the past several decades. 3,[8][9][10][11] However, the welding process can subject materials to nonuniform thermal cycles, which, in turn, can induce significant changes in microstructures and mechanical strength as well as the fatigue behaviours of final components. [12][13][14][15] With the increased popularity of China high-speed railway in the past few years, the operating conditions of railway vehicles have become more stringent.…”

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confidence: 99%

The microstructure, mechanical, and fatigue behaviours of MAG welded G20Mn5 cast steel

Qin

Branco

et al. 2020

Fatigue Fract Eng Mat Struct

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The microstructure, mechanical strength, and fatigue response of metal active gas (MAG) butt‐welded G20Mn5 cast steel was thoroughly investigated for exploring the service safety and reliability of new‐generation railway bogie frames. The fatigue properties of the matrix and welded joints were determined by both low‐ and high‐cycle service regimes. On the basis of nanoindentation testing, the fatigue crack growth (FCG) was derived by correlating with cyclic plastic response of microdomain materials across the MAG joint. The results show that the MAG induces considerable changes in microstructures and hardness of the G20Mn5 matrix and resultantly produces an overmatching welded joint but show comparatively low‐ and high‐cycle fatigue properties to as‐received material. The calculated threshold FCG range based on the Murakami model indicates that the maximum 1.5‐mm defect might be the cracking site subjected to fatigue loading from the structural integrity viewpoint.

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“…Several researchers have focused on the effect of processing parameters on the microstructure and mechanical properties of fabricated composites of ferrous and non-ferrous materials by friction stir processing [1][2][3][4][5][6][7]. Aruri et al [8] studied the mechanical properties and wear of the surface composite of AA6061, fabricated by FSP.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties in nano and microscale SiC-included dissimilar friction stir welding of AA6061-AA2024

Moradi

Aval

Jamaati

2018

Materials Science and Technology

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This work investigates the effect of SiC particles on the microstructure and mechanical properties of dissimilar friction stir welding between AA6061-T6 and AA2024-T351. Two variations in the size of SiC particles, along the joint line, various groove width, and tool offset, were used for the welding. It was found that the joints made by rotational speed of 800 rev min−1, travelling speed of 31.5 mm min−1, groove width of 0.3 mm, and tool offset of 0.5 mm exhibited the most uniform distribution of particles for both micro- and nano-scale SiC particles. Additionally, the smaller and rounded equiaxed particles result in easier material flow, a more uniform metal matrix composite, the smallest grain size in the stir zone and the highest tensile strength.

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Enhanced mechanical properties of medium carbon steel casting via friction stir processing and subsequent annealing

Cited by 35 publications

References 22 publications

Studying the impact of multi-pass friction stir processing on microstructure and mechanical properties of low-carbon steel

Studying the impact of multi-pass friction stir processing on microstructure and mechanical properties of low-carbon steel

The microstructure, mechanical, and fatigue behaviours of MAG welded G20Mn5 cast steel

Microstructure and mechanical properties in nano and microscale SiC-included dissimilar friction stir welding of AA6061-AA2024

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