X-ray diffraction line profile analysis for defect study in Cu-1 wt.% Cr-0.1 wt.% Zr alloy

Kapoor, K.; Lahiri, Debrupa; Batra, I.S.; Rao, S Manimala; Sanyal, Tapobrata

doi:10.1016/j.matchar.2004.09.009

Cited by 54 publications

(23 citation statements)

References 25 publications

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“…Both these factors are expected to have a large influence on the calculation of SFE by XRD and are not discussed critically in the domain of published literature. [39][40][41]61] Therefore, the partitioning of alloying elements in austenite (as determined by EPMA) in conjunction with the Reed and Schramm [40] ** and Rhodes and Thompson [61] empirical relations was used to calculate the SFE of austenite in DSS and SDSS and is used in relative terms in the present investigation.…”

Section: Discussionmentioning

confidence: 99%

“…The intrinsic saturation magnetization of both steels was calculated by incorporating all these parameters into a single formula, as proposed by Alvarez et al [38] Its value was found to be 143 A m 2 kg À1 for DSS and 131 A m 2 kg À1 for SDSS. The stacking fault probability (SFP) of austenite was measured by X-ray peak profile shift analysis, [39][40][41] while the root-mean-square (rms) strain was obtained by the Warren-Averbach method [42] incorporated in the software MarqX. [43] For calculating SFP, X-ray peak profiles were measured for solution-annealed and 3 pct cold-rolled samples for both steels.…”

Section: Methodsmentioning

confidence: 99%

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Microstructure and Texture Development during Cold Rolling in UNS S32205 and UNS S32760 Duplex Stainless Steels

Kumar

Khatirkar

Chalapathi

et al. 2017

Metall Mater Trans A

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In the present study, microstructure and texture evolution during cold rolling in UNS S32205 and UNS S32760 duplex stainless steel was investigated. Both steels were unidirectionally cold rolled up to 80 pct thickness reduction. Scanning electron microscopy and electron backscattered diffraction (EBSD) were used for microstructural characterization, while X-ray diffraction (XRD) was used for the measurement of bulk texture. Strain-induced martensite (SIM) was identified and quantified with the help of magnetic measurements (B-H curve and magnetization saturation). With the increase in plastic strain, the grains became morphologically elongated along the rolling direction with the reduction in average band thickness and band spacing. SIM increased with the increase in deformation and was found to be a function of strain and the SFE of austenite. The increase in SIM was much more pronounced in UNS S32205 steel as compared to UNS S32760 steel. After cold rolling, strong a-fiber (RD//h110i) texture was developed in ferrite, while brass texture was dominant in austenite for both steels. The strength of texture components and fibers was stronger in UNS S32760 steel. Another significant feature was the development of weak c-fiber (ND//h111i) in UNS S32760 steel at intermediate deformation.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Microstructure and Texture Development during Cold Rolling in UNS S32205 and UNS S32760 Duplex Stainless Steels

Kumar

Khatirkar

Chalapathi

et al. 2017

Metall Mater Trans A

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“…[67] This is consistent with a previous observation that, in ternary Cu-1 wt pct Cr-0.1 wt pct Zr alloy, the addition of a small amount of Zr is effective in introducing stacking faults and improving fatigue resistance. [68] IV. CONCLUSIONS Strain-controlled LCF tests with different strain rates and strain amplitudes were conducted to investigate the influence of a zirconium (Zr) addition on the fatigue response of UFG copper (Cu).…”

Section: Strain-rate Dependencementioning

confidence: 99%

The Influence of Zirconium on the Low-Cycle Fatigue Response of Ultrafine-Grained Copper

Gabor

Canadinç

Maier

et al. 2007

Metall Mater Trans A

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This article reports on the influence of zirconium (Zr) addition (0.17 wt pct) on the cyclic stability of ultrafine-grained (UFG) oxygen-free high-conductivity (OFHC) copper (Cu) of originally high (99.995 wt pct) purity processed via equal-channel angular extrusion (ECAE). Systematic low-cycle fatigue (LCF) tests accompanied by microstructural investigation revealed that a Zr addition substantially affects the cyclic stability of UFG Cu, such that longer fatigue lives, notable cyclic hardening, and higher stress ranges were attained in the LCF regime. This significant improvement of the fatigue properties of OFHC Cu by the addition of Zr is attributed to the Cu-Zr precipitates and impurities, effectively limiting the mobility of the grain boundaries and additional work hardening imposed by the precipitates. In addition, the strainamplitude and strain-rate dependencies of the cyclic stability of Zr-added UFG Cu were investigated in detail, where the UFG Cu-Zr alloy exhibits an expressively lesser dependency as compared with the pure UFG Cu. The current results offer new insight into the improvement of the cyclic stability of UFG Cu and other UFG materials, and provides a venue for their utility in a broader range of applications demanding enhanced cyclic deformation response and stability.

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“…También observaron el incremento de los valores de α en la medida del incremento del porcentaje de cobalto en la aleación. Kapoor et al [29] verificaron el aumento de α para aleaciones de Cu-1 % en peso de Cr-0.1 % en peso Zr, reportando un valor máximo de α ≈5.6x10 -3 . Sahu et al [30] reportaron valores para α de 7.05x10 -3 para aleaciones de Cu-15 % en peso Ni-5 % en peso Sn.…”

Section: Métodosunclassified

Análisis de perfiles de difracción de rayos X de una aleación Cu-8% en peso de Cr obtenida por medio de aleado mecánico

et al. 2009

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RESUMENEl presente trabajo estudia la evolución de la estructura de una mezcla de polvos Cu-8% peso de Cr, aleada mecánicamente, por medio del análisis de perfiles de difracción de rayos X. Se encontró que al aumentar el tiempo de molienda, el tamaño de cristalitas y la energía de falla de apilamiento disminuyeron, y los valores de microdeformación y probabilidad de falla de apilamiento aumentaron. La distribución de cristalitas se desplazo hacia valores menores de tamaño de cristalitas al incrementar el tiempo de molienda. Después de 50 horas de molienda, los datos indicaron que se ha producido una solución sólida de cromo en cobre.Palabras claves: aleado mecánico, Cu-Cr, tamaño cristalita, falla apilamiento. X-Ray profile analysis of Cu-8wt.%Cr processed by mechanical alloying ABSTRACTThis work studies the evolution of the microstrucutre of a mechanically alloyed Cu-8 wt. % Cr powder mixture by X-Ray profiles analysis. The process was carried out using a SPEX8000D upon mix with stainless steels containers and balls, keeping a constant powder to balls weight ratio of 10. Increasing the milling time, crystallite size and stacking fault energy decreased and microstrain and stacking fault probability increased. The crystallite size distribution shifts to lower crystallite size values by increasing the milling time. After a milling time of 50 hours, the data showed that a solid solution of chromium in copper was produced.

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X-ray diffraction line profile analysis for defect study in Cu-1 wt.% Cr-0.1 wt.% Zr alloy

Cited by 54 publications

References 25 publications

Microstructure and Texture Development during Cold Rolling in UNS S32205 and UNS S32760 Duplex Stainless Steels

Microstructure and Texture Development during Cold Rolling in UNS S32205 and UNS S32760 Duplex Stainless Steels

The Influence of Zirconium on the Low-Cycle Fatigue Response of Ultrafine-Grained Copper

Análisis de perfiles de difracción de rayos X de una aleación Cu-8% en peso de Cr obtenida por medio de aleado mecánico

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