Production of nano/ultrafine grained AISI 201L stainless steel through advanced thermo-mechanical treatment

Rezaee, A.; Kermanpur, A.; Najafizadeh, A.; Moallemi, Mohammad

doi:10.1016/j.msea.2011.02.093

Cited by 54 publications

(24 citation statements)

References 15 publications

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“…Further cold rolling above 30% reduction deforms the SIM itself and thereby increases density of crystal defects. It has reported 24) that, standard 201L stainless steel saturated at the thickness reduction of 40% whereas in the present Timodified 201L steel saturation was occurred in 30% thickness reduction. In fact Ti-modified 201L steel has a lower ε s owing to lower SFE.…”

Section: Resultscontrasting

confidence: 52%

“…A recent thermomechanical process using SIM and its reverse transformation, called martensite treatment, is one of important approaches to fabricate NG/ UFG structure in metastable austenitic steels especially ASSs. [13][14][15][16][17][18][19][20][21][22][23][24][25][26] In this approach severe deformation of austenite at room temperature leads to strain-induced transformation of austenite (fcc γ) to martensite (bcc α′) and upon annealing, this heavily deformed SIM transforms back to austenite either through a martensitic shear or diffusional reversion mechanisms leading to noticeable grain refinement. 27,28) Because of extremely small grain sizes, NG materials exhibit very high strength.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Rezaee et al 24,25) have shown that there is a great grain refining potential through martensite treatment for the 201L stainless steel to occur. The main objective of the present work is to investigate the effect of Ti addition on the formation of NG/UFG structure in the 201L stainless steel in order to improve ductility of the NG/ UFG steel.…”

Section: Introductionmentioning

confidence: 99%

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Formation of Nano/ultrafine Grain Structure in a Ti-modified 201L Stainless Steel through Martensite Thermomechanical Treatment

2014

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The formation of nano/ultrafine grain structure in a Ti-modified 201L austenitic stainless steel using the martensite thermomechanical treatment was investigated. Effects of Ti micro-alloy addition on the formation of strain-induced martensite (SIM) during cold rolling and austenite reversion during subsequent annealing were studied. The results showed that the nano-grained Ti-modified 201L steel with the average grain size of 45 nm possessed the yield strength of 1 000 MPa, ultimate tensile strength of 1 330 MPa and total elongation of 42%. Such improvement in mechanical properties of the thermomechanically processed steel is believed to be due to the formation of SIM supplemented with precipitation of Ti carbides.

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Section: Resultscontrasting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Formation of Nano/ultrafine Grain Structure in a Ti-modified 201L Stainless Steel through Martensite Thermomechanical Treatment

2014

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“…Heat treatment on metal will change the microstructure and mechanical properties, the Heat treatment can increasing or decrease the mechanical properties of metals, depend on the purpose of the heat treatment. On MMC the heat treatment intended to increasing the mechanical properties of MMC [17].…”

Section: Introductionmentioning

confidence: 99%

Heat treatment effect on metal matrix composite with brass matrix and fly ash

Aminnudin

Choiron

2018

MATEC Web Conf.

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Metal matrix composite (MMC) is a combination of two or more materials using metal as a matrix. In this paper we used brass as the matrix and fly ash as for the particle. The fly ash used is fly ash which is produced from coal combustion in the Paiton power plant. Fly ash composition in the MMC are 5% and 10%. The MMC was produced with gas furnace. Heat tratment to MMC was done at 350 and 400 C.Hard testing process, tensile test and impack test are carried out at MMC before heat treatment and after heat treatment. From the test results showed an increase in hardness, tensile strength and impact test showed the heat treatment process at a temperature of 350 C. Heat treatment at a temperature of 400 C does not improve the mechanical properties of MMC

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“…The efficiency of cold working for processing the high-strength ultrafine-grained/nanocrystalline products depends remarkably on the kinetics of grain refinement during plastic deformation. Austenitic stainless steels are typical representative of metallic materials exhibiting rapid grain refinement upon cold working [7][8][9][10]. The grain refinement in these steels is promoted by an intensive grain subdivision, which is associated with deformation twinning followed by strain-induced martensitic transformation [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Development of Nanocrystalline 304L Stainless Steel by Large Strain Cold Working

Odnobokova

Belyakov

Kaibyshev

2015

Metals

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Abstract:The microstructural changes leading to nanocrystalline structure development and the respective tensile properties were studied in a 304L stainless steel subjected to large strain cold rolling at ambient temperature. The cold rolling was accompanied by the development of deformation twinning and martensitic transformation. The latter readily occurred at deformation microshear bands, leading the martensite fraction to approach 0.75 at a total strain of 3. The deformation twinning followed by microshear banding and martensitic transformation promoted the development of nanocrystalline structure consisting of a uniform mixture of austenite and martensite grains with their transverse sizes of 120-150 nm. The developed nanocrystallites were characterized by high dislocation density in their interiors of about 3 × 10 15 m −2 and 2 × 10 15 m −2 in austenite and martensite, respectively. The development of nanocrystalline structures with high internal stresses led to significant strengthening. The yield strength increased from 220 MPa in the original hot forged state to 1600 MPa after cold rolling to a strain of 3.

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Production of nano/ultrafine grained AISI 201L stainless steel through advanced thermo-mechanical treatment

Cited by 54 publications

References 15 publications

Formation of Nano/ultrafine Grain Structure in a Ti-modified 201L Stainless Steel through Martensite Thermomechanical Treatment

Formation of Nano/ultrafine Grain Structure in a Ti-modified 201L Stainless Steel through Martensite Thermomechanical Treatment

Heat treatment effect on metal matrix composite with brass matrix and fly ash

Development of Nanocrystalline 304L Stainless Steel by Large Strain Cold Working

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