Sintering behavior of addictive boron in stainless steel via master sintering curves and microstructural verification using image processing

Park, Dong Yong; Shin, Da Seul; Park, Hyeon Jeong; Baik, Young-Jin; Oh, Yung-Hwan; Park, Seong Jin

doi:10.1016/j.matchar.2019.01.008

Cited by 8 publications

(1 citation statement)

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“…Francisco et al focused on the role of boron as a sintering additive in PM of AISI 316L austenitic stainless steel and investigated the effect of boron regarding densification, microstructure, hardness, and micro-scale abrasion [ 7 ]. Park et al investigated the effects of boron on densification for sintering via master sintering curves and microstructure analysis based on image processing using mixtures of different boron contents in 316L stainless steel powder [ 15 ]. The distributions of boron phases and elemental boron have a strong influence on the mechanical [ 6 ] and corrosion [ 16 ] properties of BSS.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment Temperature on Microstructure and Properties of PM Borated Stainless Steel Prepared by Hot Isostatic Pressing

Pei

et al. 2021

Materials

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Borated stainless steel (BSS) with a boron content of 1.86% was prepared by a powder metallurgy process incorporating atomization and hot isostatic pressing. After solution quenching at 900–1200 °C, the phase composition of the alloy was studied by quantitative X-ray diffraction phase analysis. The microstructure, fracture morphology, and distributions of boron, chromium, and iron in grains of the alloy were analyzed by field-emission scanning electron microscopy with secondary electron and energy-dispersive spectroscopy. After the coupons were heat treated at different temperatures ranging from 900 to 1200 °C, the strength and plasticity were tested, and the fracture surfaces were analyzed. Undergoing heat treatment at different temperatures, the phases of the alloy were austenite and Fe1.1Cr0.9B0.9 phase. Since the diffusion coefficients of Cr, Fe, and B varied at different temperatures, the distribution of elements in the alloy was not uniform. The alloy with good strength and plasticity can be obtained when the heat treatment temperature of alloy ranged from 1000 to 1150 °C while the tensile strength was about 800 MPa, with the elongation standing about 20%.

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Section: Introductionmentioning

confidence: 99%