Surface nanocrystallization of 316L stainless steel induced by ultrasonic shot peening

Liu, G; Lü, Jian; Lu, K.

doi:10.1016/s0921-5093(00)00686-9

Cited by 433 publications

(150 citation statements)

References 15 publications

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“…The difference might be due to the fact that the XRD result averages the structure information of a surface layer of about 6 m thick (for 95% absorption of Cuk␣ radiation), while TEM sample of top surface layer is a very thin film (less than 1 m thick). As shown in previous work and wear test (8,11), grain refinement is regionally inhomogeneous, there exists a grain size change which progressively increases with the distance from the peened surface.…”

Section: Resultssupporting

confidence: 56%

“…surface nanocrystallization (SNC) (6). By using the ultrasonic shot peening (USP) method (7), nanostructured surface layers were successfully obtained on a 316L stainless steel and the pure Fe samples (8,9). In this work, we report the synthesis of a nanostructured surface layer on a low carbon steel by using a high-energy shot peening (HESP).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

Liu¹,

Wang²,

Lou³

et al. 2001

Scripta Materialia

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232

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Section: Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

Liu¹,

Wang²,

Lou³

et al. 2001

Scripta Materialia

Self Cite

232

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“…Therefore, surface properties such as hardness must be improved using appropriate techniques. Mechanical surface treatments such as ultrasonic shot peening, 3,4 laser shock peening, 5,6 burnishing 7,8 and deep rolling 9,10 are appropriate methods for surface grain refinement, resulting in improvement of surface hardness and other properties of austenitic stainless steels. Among them, deep rolling is a well-known method for increase of surface regions hardness with a thick affected depth.…”

Section: Introductionmentioning

confidence: 99%

Formation of Surface Nano/Ultrafine Structure using Deep Rolling Process on the AISI 316L Stainless Steel

Tadi¹

2017

MSEIJ

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In the present work, effect of deep cold rolling process known as deep rolling on near-surface microstructure and hardness of an austenitic stainless steel has been evaluated. Deep rolling process using a ball-point device was carried out on the barshaped AISI 316L stainless steel specimens. The process was performed at 15 and 26 passes with 0.2mm/s longitudinal rate and 22.4rpm bar rotation. Microstructure and hardness were investigated by feritscope, X-ray diffract meter, field emission scanning electron microscope and Vickers¬ micro-indenter at 0.1kgf. A composite microstructure, consisting of ultrafine and nano grains (200nm and 70nm), mechanical twins and strain-induced marten site, was observed in the near-surface regions. Surface hardness was increased from 210 to 450 and 500HV0.1 after 15 and 26 passes, respectively.

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“…3,4 The balls in the SMAT experiment are accelerated and bombarded by the ultrasonic motor on the bottom of a chamber, as shown in Fig. 1(a).…”

Section: Introductionmentioning

confidence: 99%

Analytical modelling for ultrasonic surface mechanical attrition treatment

et al. 2015

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The grain refinement, gradient structure, fatigue limit, hardness, and tensile strength of metallic materials can be effectively enhanced by ultrasonic surface mechanical attrition treatment (SMAT), however, never before has SMAT been treated with rigorous analytical modelling such as the connection among the input energy and power and resultant temperature of metallic materials subjected to SMAT. Therefore, a systematic SMAT model is actually needed. In this article, we have calculated the averaged speed, duration time of a cycle, kinetic energy and kinetic energy loss of flying balls in SMAT for structural metallic materials. The connection among the quantities such as the frequency and amplitude of attrition ultrasonic vibration motor, the diameter, mass and density of balls, the sample mass, and the height of chamber have been considered and modelled in details. And we have introduced the one-dimensional heat equation with heat source within uniform-distributed depth in estimating the temperature distribution and heat energy of sample. In this approach, there exists a condition for the frequency of flying balls reaching a steady speed. With these known quantities, we can estimate the strain rate, hardness, and grain size of sample. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

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Surface nanocrystallization of 316L stainless steel induced by ultrasonic shot peening

Cited by 433 publications

References 15 publications

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

Formation of Surface Nano/Ultrafine Structure using Deep Rolling Process on the AISI 316L Stainless Steel

Analytical modelling for ultrasonic surface mechanical attrition treatment

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