Surface EBSD analysis and strengthening mechanism of AISI304 stainless steel subjected to massive LSP treatment with different pulse energies

Jin, Lu; Deng, W.W.; Wu, Lin; Lü, Heng

doi:10.1016/j.matchar.2017.01.036

Cited by 39 publications

(6 citation statements)

References 33 publications

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“…The grain refinement mechanism of stainless steel weldment induced by LSP is also verified by transmission electron microscopy (TEM) observations [ 25 ] and electron backscattered diffraction (EBSD) analysis [ 26 ]. The microstructures in the welding zone and HAZ are affected by LSP, and the refined grains are generated in view of dislocation movement in Figure 9 a–f [ 25 ].…”

Section: Resultsmentioning

confidence: 99%

“…Subgrain boundaries are formed, developed, and evolved into new grain boundaries by TEM observations [ 25 ]. As a result, the coarse grain of original stainless steel with the size of more than 30 μm can be changed into the refined grains with the size of 15 μm, and the distribution is more homogeneous and uniform after LSP by EBSD analysis in Figure 9 g,h [ 26 ]. Thus, for S3 with LSP, the tensile property can be improved and the corresponding CE resistance is strengthened at the macro level.…”

Section: Resultsmentioning

confidence: 99%

“… TEM observations and EBSD analysis: ( a – c ) in the welding zone with LSP [ 25 ]; ( d – f ) in the HAZ with LSP [ 25 ]; ( g , h ) EBSD inverse pole figures without and with LSP [ 26 ]. …”

Section: Figurementioning

confidence: 99%

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Tensile Property of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion Based on Treatment of Laser Shock Processing

et al. 2018

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Tensile property was one important index of mechanical properties of ANSI 304 stainless steel laser weldments subjected to cavitation erosion (CE). Laser shock processing (LSP) was utilized to strengthen the CE resistance, and the tensile property and fracture morphology were analyzed through three replicated experiment times. Results showed tensile process of treated weldments was composed of elastic deformation, plastic deformation, and fracture. The elastic limit, elastic modulus, elongation, area reduction, and ultimate tensile strength of tensile sample after CE were higher in view of LSP. In the fracture surface, the fiber zone, radiation zone and shear lip zone were generated, and those were more obvious through LSP. The number and size of pores in the fracture surface were smaller, and the fracture surface was smoother and more uniform. The dimples were elongated along the unified direction due to effects of LSP, and the elongated direction was in agreement with the crack propagation direction. Their distribution and shape were uniform with deeper depth. It could be reflected that the tensile property was improved by LSP and the CE resistance was also enhanced.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Tensile Property of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion Based on Treatment of Laser Shock Processing

et al. 2018

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“…Due to its good mechanical properties and excellent corrosion resistance, type 304 austenitic stainless steel is one of the most widely utilized ferrous materials in many engineering fields [1,2]. Nowadays, with the development of science and technology, stainless/carbon steel bimetal plate, as a substitute for stainless steel, has become increasingly popular for many engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Stainless/Carbon Steel Bimetal Plate

Zhang

et al. 2020

Advances in Materials Science and Engineering

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In order to research the effect of heat treatment on the microstructure and corrosion resistance of stainless/carbon steel bimetal plate, the annealing process at 700°C with different times was carried out for stainless/carbon steel bimetal plate. Because the carbon content of carbon steel was higher than that of stainless steel, the carbon would diffuse from carbon steel to stainless steel in the bimetal plate during the annealing process. e carbon diffusion would cause the thickness of the decarburized layer in carbon steel and the carbon content of stainless steel to increase. e carbon diffusion would be ongoing with the annealing process until the carbon content of stainless steel reached 0.08%. e higher carbon content could help in the formation of more chromiumdepleted regions in the stainless steel surface, causing the stainless steel in the bimetal plate to have a poorer surface corrosion resistance than that of stainless steel under the same annealing conditions.

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“…During the production, long-term workload contributes to the surface failure of many key parts. Thus, it appears a high application value to improve the surface performance of key components [1]. Surface strengthening technology, which enhances the abrasive resistance of the surface, arises at the historic moment to solve the dilemma.…”

Section: Introductionmentioning

confidence: 99%

Strengthening mechanism and properties of Co–WC composite coatings deposited by plasma‐transferred arc welding

Jiang

Tian

Shu

et al. 2019

Micro & Nano Letters

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Cobalt (Co)-based tungsten carbide (WC) wear-resistant coatings with different content of WC were prepared on the surface of Q235 low carbon steel by plasma-transferred arc welding. The properties of the coatings such as strengthening mechanism, microhardness and wear properties were tested by using a metallurgical microscope, scanning electron microscope, energy dispersive spectrometer, X-ray diffraction, Rockwell hardness tester, and friction wear equipment. The results show that the main reasons for the strengthening of spray welding layer are the solution strengthening formed by α-Co with supersaturated tungsten (W) and the dispersion strengthening caused by eutectic precipitated carbide and silicide. The proportion of the solid solution of W in α-Co steadily ranges from 18.00 to 19.59%. The morphologies of rich W-phase are mainly related to the content of W. With the content of W increasing, the evolution process of the shape is the amorphous form→damascene shape→star-like shape→the polygon. Amorphous W-rich phase can be obtained when the content of WC ranges from 20 to 30%, evenly distributed W-rich phase in the shape of damascene or star can be obtained when the WC content ranges from 30 to 40%, and the polygonal W-rich phase can be obtained at the percentage of 40-50%.

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Surface EBSD analysis and strengthening mechanism of AISI304 stainless steel subjected to massive LSP treatment with different pulse energies

Cited by 39 publications

References 33 publications

Tensile Property of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion Based on Treatment of Laser Shock Processing

Tensile Property of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion Based on Treatment of Laser Shock Processing

Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Stainless/Carbon Steel Bimetal Plate

Strengthening mechanism and properties of Co–WC composite coatings deposited by plasma‐transferred arc welding

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