Mechanical, electrochemical and tribological properties of nano-crystalline surface of 304 stainless steel

Wang, X.Y.; Li, D.Y.

doi:10.1016/s0043-1648(03)00055-3

Cited by 194 publications

(95 citation statements)

References 14 publications

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“…Stainless steel is an important material because sandblasting produces (together with thermal treatment) a nanocrystalline layer improving surface properties [9]. Moreover, metastable austenitic stainless steels exhibiting fcc structure can be transformed to martensitic (bcc) phase by plastic deformation [10,11].…”

Section: Introductionmentioning

confidence: 99%

Positron Annihilation and Complementary Studies of Stainless Steel Exposed to Sandblasting at Different Angles

et al. 2017

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Defect studies in subsurface zone in stainless steel 304 AISI samples exposed to sandblasting were performed using positron annihilation spectroscopy techniques. Samples were sandblasted with a different impact angle. Conventional experiments based on positrons emitted directly from the radioactive source allowed us to detect vacancies on the dislocation edges in all samples; however, the total depths of subsurface zones depended strictly on the impact angle, i.e., 35 lm for impact angle of 90°and about 12 lm for 30°. The complementary methods such as SEM and optical profilometry revealed also dependencies between the impact angle and roughness of the surface which are not observed in the variable energy positron beam examinations.

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Section: Introductionmentioning

confidence: 99%

Positron Annihilation and Complementary Studies of Stainless Steel Exposed to Sandblasting at Different Angles

et al. 2017

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“…Bulk sheet form specimens with submicron grains has been obtained. To obtain nanograined materials (grain size smaller than 100 nm), various methods such as consolidation of ultrafine powders, 8) electron beam deposition, 9) electrodeposition, 10) crystallization of amorphous phase, 11) severe plastic deformation [12][13][14][15][16][17][18][19][20][21][22][23][24] etc. have been developed.…”

Section: Introductionmentioning

confidence: 99%

Nanocrystallization of Steels by Severe Plastic Deformation

Umemoto

2003

Mater. Trans.

181

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The formation of nanocrystalline structure (NS) in steels by various severe plastic deformation processes, such as ball milling, a ball drop test, particle impact deformation and air blast shot peening are demonstrated. Layered or equiaxed nanograined region appeared near the specimen surface and dislocated cell structured region appeared interior of specimens. These regions are separated with clearly defined boundaries. The deformation induced nanograined regions have the following common specific characteristics: 1) with grains smaller than 100 nm and low dislocation density interior of grains, 2) extremely high hardness, 3) dissolution of cementite when it exist and 4) no recrystallization and slow grain growth by annealing. The deformation conditions to produce NS was discussed based on the available data in literatures. It was suggested that the most important condition is to impose a strain larger than about 7. High strain rates, low deformation temperature, multidirectional deformation, hydrostatic pressure are considered to be favorable conditions to produce NS. Introducing alloying elements, precipitates and second phase also enhance nanocrystallization by suppressing recovery. The mechanisms of the formation of sharply defined boundaries which separate nanograined structure region from dislocated cell structured region were discussed with respect to impurities, martensitic transformation and deformation. It was suggested several mechanisms may operate simultaneously in the formation of the clear boundaries.

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“…In the past decade many KFM studies have also been conducted on a broad range of topics in corrosion science, including research on the corrosion behavior of steel [136][137][138][139][140][141][142][143][144], Al [143], Cu [145][146][147][148], Zn [143,144,[149][150][151][152], alloys based on Al-Mg [153][154][155][156][157][158][159][160][161][162][163][164] and Ti [165], on corrosion protection with rare-earth elements [166] and other inhibitors [167][168][169][170], the effect of conversion coatings [171][172][173][174][175][176], and the effects of heat treatment on material properties [177][178][179]. Yamawaki et al …”

Section: Metalsmentioning

confidence: 99%

Multidimensional electrochemical imaging in materials science

2007

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In the past 20 years the characterization of electroactive surfaces and electrode reactions by scanning probe techniques has advanced significantly, benefiting from instrumental and methodological developments in the field. Electrochemical and electrical analysis instruments are attractive tools for identifying regions of different electrochemical properties and chemical reactivity and contribute to the advancement of molecular electronics. Besides their function as a surface analytical device, they have proved to be unique tools for local synthesis of polymers, metal depots, clusters, etc. This review will focus primarily on progress made by use of scanning electrochemical microscopy (SECM), conductive AFM (C-AFM), electrochemical scanning tunneling microscopy (EC-STM), and surface potential measurements, for example Kelvin probe force microscopy (KFM), for multidimensional imaging of potential-dependent processes on metals and electrified surfaces modified with polymers and self assembled monolayers.

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Mechanical, electrochemical and tribological properties of nano-crystalline surface of 304 stainless steel

Cited by 194 publications

References 14 publications

Positron Annihilation and Complementary Studies of Stainless Steel Exposed to Sandblasting at Different Angles

Positron Annihilation and Complementary Studies of Stainless Steel Exposed to Sandblasting at Different Angles

Nanocrystallization of Steels by Severe Plastic Deformation

Multidimensional electrochemical imaging in materials science

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