Diffusion of boron in alloys

Wang, Wendong; Zhang, Sanhong; He, Xiao

doi:10.1016/0956-7151(94)00347-k

Cited by 74 publications

(31 citation statements)

References 13 publications

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“…Boron in nickel occupies interstitial positions according to diffusivity measurements of B in Ni [23]. From analogies with B-Ni and other systems the solubility of B in the Al-fcc phase is described by a sublattice model (Al) 1 (Va,B) 1 , with the first sublattice filled by Al and the second sublattice filled by vacancies (Va) and B.…”

Section: Thermodynamic Models and Parameter Optimizationmentioning

confidence: 99%

Experimental study and thermodynamic re-assessment of the Al–B system

Mirković

Gröbner

Schmid–Fetzer

et al. 2004

Journal of Alloys and Compounds

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Section: Thermodynamic Models and Parameter Optimizationmentioning

confidence: 99%

Experimental study and thermodynamic re-assessment of the Al–B system

Mirković

Gröbner

Schmid–Fetzer

et al. 2004

Journal of Alloys and Compounds

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“…11) The diffusion coefficient of B in low carbon steel is on the order of 10 Ϫ10 m 2 /s at ϳ1 200°C. 12) The diffusion coefficient of Nitrogen (N) in Fe at ϳ1 200°C is slightly less than that of B, and that of a metallic elements 13) such as Cr in Fe at ϳ1 200°C is on the order of 10 Ϫ15 m 2 /s. 14) These coefficients indicate that both B and N diffuse faster and can travel farther in steel than can metallic elements.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Cycle and Nitrogen Content on the Hot Ductility of Boron-bearing Steel

et al. 2010

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“…Ni addition accelerates the boron diffusion in the c-iron, similar to the carbon behavior in the presence of Ni [33,34] and increases the density of the PM steels. [15,35] Liu et al [36] have shown near-full density after sintering pure iron with 1 wt pct Ni and 0.3 wt pct B.…”

Section: Discussionmentioning

confidence: 99%

Enhanced Densification of PM Steels by Liquid Phase Sintering with Boron-Containing Master Alloy

Sundaram

Surreddi

Hryha

et al. 2017

Metall Mater Trans A

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Reaching high density in PM steels is important for high-performance applications. In this study, liquid phase sintering of PM steels by adding gas-atomized Ni-Mn-B master alloy was investigated for enhancing the density levels of Fe-and Mo-prealloyed steel powder compacts. The results indicated that liquid formation occurs in two stages, beginning with the master alloy melting (LP-1) below and eutectic phase formation (LP-2) above 1373 K (1100°C). Mo and C addition revealed a significant influence on the LP-2 temperatures and hence on the final densification behavior and mechanical properties. Microstructural embrittlement occurs with the formation of continuous boride networks along the grain boundaries, and its severity increases with carbon addition, especially for 2.5 wt pct of master alloy content. Sintering behavior, along with liquid generation, microstructural characteristics, and mechanical testing revealed that the reduced master alloy content from 2.5 to 1.5 wt pct (reaching overall boron content from 0.2 to 0.12 wt pct) was necessary for obtaining good ductility with better mechanical properties. Sintering with Ni-Mn-B master alloy enables the sintering activation by liquid phase formation in two stages to attain high density in PM steels suitable for high-performance applications.

show abstract

Diffusion of boron in alloys

Cited by 74 publications

References 13 publications

Experimental study and thermodynamic re-assessment of the Al–B system

Experimental study and thermodynamic re-assessment of the Al–B system

Effect of Thermal Cycle and Nitrogen Content on the Hot Ductility of Boron-bearing Steel

Enhanced Densification of PM Steels by Liquid Phase Sintering with Boron-Containing Master Alloy

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