heterogeneous microstructure and corrosion resistance

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heterogeneous microstructure and corrosion resistance

(PDF) Microstructure and Corrosion Resistance of Laser

Microstructure and Corrosion Resistance of Laser Additively Manufactured 316L Stainless Steel February 2016 JOM the journal of the Minerals,Metals Materials Society 68(3):850-859

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Heterogeneous microstructures and corrosion resistance of biomedical Co-Cr-Mo alloy fabricated by electron beam melting (EBM) Article (PDF Available) September 2018 with 340 Reads How we Author Jianglong YiPublish Year 2020Heterogeneous microstructures and corrosion resistance of ·Heterogeneous microstructures and corrosion resistance of biomedical Co-Cr-Mo alloy fabricated by electron beam melting (EBM) the distribution of microstructure along the as-EBM-built rods has not been well investigated.In particular,the phase and amount of precipitates in the rods have not been observed and analyzed. Finally,the

Author Peng Zhou,Lei Deng,Peng Guo,Wei Rao,Xinyun Wang,Mao ZhangPublish Year 2020Heterogeneous microstructures and corrosion resistance of

Heterogeneous microstructures and corrosion resistance of biomedical Co-Cr-Mo alloy fabricated by electron beam melting (EBM) Article (PDF Available) September 2018 with 340 Reads How we Basic Understanding of Weld Corrosion2/Corrosion of Weldments Fig.1 Schematic showing the regions of a heterogeneous weld.Source Ref 2 Fig.2 Concentration prole of chromium and nickel across the weld fusion boundary region of type 304 stainless steel.Source Ref 4 chapter describes some of the general character-

Basic Understanding of Weld Corrosion

2/Corrosion of Weldments Fig.1 Schematic showing the regions of a heterogeneous weld.Source Ref 2 Fig.2 Concentration prole of chromium and nickel across the weld fusion boundary region of type 304 stainless steel.Source Ref 4 chapter describes some of the general character-istics associated with the corrosion of weld-ments.Cited by 10Publish Year 2018Author Daixiu Wei,Yuichiro Koizumi,Akihiko Chiba,Kosuke Ueki,Kyosuke Ueda,Takayuki Narushima,Yusuke TInfluence of Microstructure Heterogeneity on the Corrosion Sep 17,2020·The influences of microstructural heterogeneity on the corrosion resistance and microhardness were characterized.The results show that,compared with the annealed samples,the microhardness is significantly increased and corrosion resistance is reduced by HPT treatment.Due to the massive formation of high-angle grain boundaries (HAGBs),which provide nucleation sites for

Cited by 4Publish Year 2019Author Hesham Mraied,Wenbo Wang,Wenjun CaiEffect of microstructure on the corrosion resistance of

Jul 01,2020·As is well known,the corrosion resistance of stainless steel coatings is mainly determined by the thin passive film which is closely related to the microstructure ,.In addition to the microstructure,the homogeneity of the composition distribution and the presence of precipitates are other important factors [34] .Effect of Heterogeneous Lamellar Structure on Mechanical Jul 10,2020·The heterogeneous lamellar structure composed of a mixture of coarse crystal layer and fine crystal layer can improve the mechanical properties and corrosion resistance of the metal.To obtain high-performance aluminum alloy with heterogeneous lamellar structure,high-pressure torsion experiments have been carried out at 360,380 and 400 °C.

Effect of microstructure on the corrosion resistance of

1 Effect of microstructure on the corrosion resistance of AA2524-T3 and AA2198 T-851 aluminum alloys used in the aeronautic industry Aline Fatima Silva Santos1,Silvana Zacarelli1,Sidnei Ramis de Araujo2,Fernanda Martins Queiroz1,Maysa Terada1,Isolda Costa1 1 IPEN/CNEN-SP,Av.Prof.Lineu Prestes,2242,São Paulo,SP,CEP 05508-000,Brazil.,2 Centro Nacional de Pesquisa em Energia e Effect of microstructure on the corrosion resistance of 1 Effect of microstructure on the corrosion resistance of AA2524-T3 and AA2198 T-851 aluminum alloys used in the aeronautic industry Aline Fatima Silva Santos1,Silvana Zacarelli1,Sidnei Ramis de Araujo2,Fernanda Martins Queiroz1,Maysa Terada1,Isolda Costa1 1 IPEN/CNEN-SP,Av.Prof.Lineu Prestes,2242,São Paulo,SP,CEP 05508-000,Brazil.,2 Centro Nacional de Pesquisa em Energia e

Heat treatment,microstructure and corrosion of a low

Jun 08,2007·The microstructure of each sample,before and after corrosion,was examined by optical and/or scanning electron microscopy.In general,heterogeneous structures containing dendritic segregations and precipitates were found to be more prone to corrosion than the single phase solid solution structure produced by homogenization.Heterogeneous Microstructure and Corrosion Resistanceheterogeneous microstructures of welded joint can not be eliminated due to its nature characteristic together with different resistance to corrosion.Pimenta et al.[4] found that,the weld metal remained prone to corrosion even though the most advanced welding technology,such as laser and electron beam welding,was used.

Heterogeneous microstructure and voids dependence of

Nov 04,2020·Microstructure and voids evolution of a selective laser melted (SLM) AlSi10Mg alloy during tension were systematically investigated.The SLM AlSi10Mg sample is featured with a multi-level heterogeneous microstructure that is composed of melt pools (MPs),columnar Al grains and sub-cells.Improved corrosion resistance of friction stir welded Jan 01,2021·The experimental results exhibited that the heterogeneous microstructure in the different zones of the FSW joint caused inhomogeneous susceptibilities to local corrosion.The coarse second phase in the heat-affected zone (HAZ) decreased the corrosion resistance.

Influence of Chemical Heterogeneity and Microstructure

microstructure nearly without chemical heterogeneity.Corrosion testing,in-situ image monitoring,and post-corrosion microstructure characterization were combined to determine the roles of chemical heterogeneity and microstructure on the corrosion mechanism ofInfluence of chemical heterogeneity and microstructure on In this study,the effect of chemical heterogeneity and microstructure on the corrosion resistance of two alloys with different metallurgical states was investigated cast (as in traditional preparation) and as-deposited produced by magnetron sputtering.

Influence of chemical heterogeneity and microstructure on

In this study,the effect of chemical heterogeneity and microstructure on the corrosion resistance of two alloys with different metallurgical states was investigated cast (as in traditional preparation) and as-deposited produced by magnetron sputtering.The corrosion behavior was studied by potentiodynamic polarization and electrochemical Influence of chemical heterogeneity and microstructure on Oct 23,2019·In this study,the effect of chemical heterogeneity and microstructure on the corrosion resistance of two alloys with different metallurgical states was investigated cast (as in traditional preparation) and as-deposited produced by magnetron sputtering.The corrosion behavior was studied by potentiodynamic polarization and electrochemical

Investigation on microstructure and localized corrosion

Jul 23,2020·Friction stir welding (FSW) is an effective welding technique to realize the joining of dissimilar aluminum alloys.The microstructural heterogeneities induced by FSW across the joints could have curial implication for the corrosion performance of the joints.In this research,the microstructure and localized corrosion behavior of shoulder interface zone (SIZ),vortex zone (VZ),bottom zone Investigation on microstructure and localized corrosion Jul 23,2020·Friction stir welding (FSW) is an effective welding technique to realize the joining of dissimilar aluminum alloys.The microstructural heterogeneities induced by FSW across the joints could have curial implication for the corrosion performance of the joints.In this research,the microstructure and localized corrosion behavior of shoulder interface zone (SIZ),vortex zone (VZ),bottom zone

Journal of Materials Research Volume 35 - Focus Issue

The study investigated novel wear and corrosion resistance of stainless steel and 316 stainless steel samples which were successfully prepared by laser melting deposition.Phase composition,microstructure,microhardness,wear resistance,and electrochemical corrosion resistanceMaterials and Corrosion Vol 69,No 8 - Wiley Online LibraryHeterogeneous corrosion behaviors of steel in seawater containing SRB was studied by wire beam electrode method combined with EIS,SEM,and XPS.Results show that charge transfer process,micromorphology,and surface composition,on cathodic area are different with that on anodic area when SRB with high metabolic activity are present.

Microstructure Characterization and Corrosion Resistance

The article examines the impact of the addition of Al,Ni,and Bi to a zinc bath on the microstructure and corrosion resistance of hot dip galvanizing coatings.The microstructure on the surface and the cross-section of the coatings obtained in the Zn-AlNiBi bath were examined.The corrosion resistance of the coatings was assessed by the standard neutral salt spray test (EN ISO 9227),the Microstructure and Corrosion Behavior of Friction Stir In this work,the microstructure and corrosion behavior of 6061 Al/AZ31 Mg FSW joints with a Zr interlayer was investigated.The results can reveal the effects of a Zr interlayer on the microstructure and corrosion behavior of Al/Mg FSW joints,which may provide design guidelines for improving joint corrosion properties by means of interlayers.

Microstructure and Corrosion Resistance of Laser

While porosity will also likely impact the environmental performance (e.g.,facilitating crevice corrosion) of AM alloys,this work demonstrates the critical influence of microstructure and heterogeneous solute distributions on the corrosion resistance of laser additively manufactured 316L stainless steel.Microstructure and Corrosion Resistance of Laser microstructure and corrosion resistance were inves-tigated,and compared to wrought 316L coupons of nominally identical composition.The PBF-L 316L alloys exhibited non-equilibrium heterogeneous microstructural features with segregated Mo that produced a cellular surface structure upon etching.Collectively,Mo segregation and non-equilibrium

Microstructure and corrosion of AA2024 in Corrosion

Zhang W,Liu X,Frankel GS.Effects of microstructure and potential on localised corrosion of AA2024-T3.In Shaw BA,Buchheti RG,Moran JP.Corrosion and prevention of low density metals and alloys.Pennington,NJ The Electrochemical Society,2001; 2000-23.p.Zhou Y,Hebert KR.Mathematical model for the initiation of aluminum etch tunnels.Microstructure and corrosion resistance of NiP gradient Therefore,it is evident that the corrosion resistance obtained was improved in the order AZ91D alloy substrate < stannate conversion film < the NiP gradient coating.The reaction resistance of NiP gradient coating from the first to fifth layers was increased,and the corrosion resistance was more excellent [Reference Ambat and Zhou 28].

Microstructure and long-term corrosion of archaeological

Jun 17,2020·The smithing skills of craftsmen in the western Mediterranean during the early Iron Age can be determined by studying the microstructure of oxidised iron items.While some ghost structures have already been identified in dense corrosion products,their formation has not always been explained.Four objects from southern France were analysed using optical microscopy,X-ray diffraction,micro Muxin Yang's research works Chinese Academy of Sciences The heterogeneous microstructure of the CR + HEA-850 leads to the marine RCSs demand not only high strength but also excellent corrosion resistance to the chloride-rich environment as the

Previous123456NextInfluence of Chemical Heterogeneity and Microstructure

microstructure nearly without chemical heterogeneity.Corrosion testing,in-situ image monitoring,and post-corrosion microstructure characterization were combined to determine the roles of chemical heterogeneity and microstructure on the corrosion mechanism ofRelationship between Pitting and IntergranularcorTosion resistance wasevaluated in an acidic chloride mediumby potentiodynamic anodic polarization method.Theresults indicated that thepitting resistance decreased as degree of sensitization increased,and this wasattributed to the formation of a heterogeneous microstructure consisting of Cr-rich M23C6 carbides,Cr-depleted regions and the

The microstructure and corrosion resistance of biological

The microstructure and corrosion resistance in simulated body fluid were investigated.The results revealed that with the rise of the annealing temperature,the grain size of the HPT alloy gradually increased and the relative diffraction peak intensity of (0002) grain orientation decreased.The amount of second phases increased first and then The microstructure,mechanical properties and corrosion The mechanical properties and corrosion resistance of 316 L stainless steel fabricated using the Laser Engineered Net Shaping (LENS) technique have been studied.The crack-free,full density samples made using SS316L alloy powder and the LENS technique are characterized by an unusual distinct dual-phase microstructure.STEM analysis revealed a significant increase of Cr and Mo content and a

The microstructure,mechanical properties and corrosion

The microstructure,mechanical properties and corrosion resistance of 316L stainless steel fabricated using laser engineered net shaping November 2016 Materials Science and Engineering A 677:1-10Thermodynamic,corrosion and mechanical properties of Zr In this paper,Zr64.2Ni16.2Cu14.6Al5and Zr63.4Ni16.2Cu15.4Al5BMGs with heterogeneous structures were prepared through steel mold casting.The microstructure,thermal stability and corrosion behavior of the two Zr-based metallic glasses were investigated by X-ray diffraction (XRD),high-resolution transmission electron micrography (HRTEM),differential scanning calorimetry (DSC) and

Towards peculiar corrosion behavior of multi-main-phase Nd

Dec 01,2020·(1) Heterogeneous microstructure,the origin of superior magnetic performance of the MMP magnet,also initiates peculiar corrosion behaviors that are distinct from conventional Nd-Fe-B.(2) Preferential corrosion of RE-rich intergranular phase yields an abnormal improvement of corrosion resistance,being one of peculiar features of the MMP magnets.



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