Sintering Mechanisms of Boron Alloyed AISI 316L Stainless Steel

Molinari, A.; Kazior, J.; Marchetti, Fábio; Canteri, R.; Cristofolini, I.; Tiziani, A.

doi:10.1179/pom.1994.37.2.115

Cited by 47 publications

(38 citation statements)

References 4 publications

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“…The selection of additive for iron indicates boron as a suitable element, even though it needs for sintering the use of pure dry hydrogen atmosphere [10]. Boron promotes the stabilization of ferrite but first of all, activates sintering of iron and steel by the formation of a persistent liquid phase, with further positive effects on the technological properties of the sintered components.…”

Section: Introductionmentioning

confidence: 99%

Activated sintering of P/M duplex stainless steel powders

Kazior

Nykiel

Pieczonka

et al. 2004

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Activated sintering of P/M duplex stainless steel powders

Kazior

Nykiel

Pieczonka

et al. 2004

Journal of Materials Processing Technology

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“…Boron as a sintering aid for ferrous alloys has been widely reported (for example see [8][9][10][11][12][13][14][15][16][17]). The boron is usually added either in its elemental form [10][11][12][13][14] or as Fe 2 B [10,[15][16][17].…”

Section: Discussionmentioning

confidence: 99%

The sintering of an Fe–Cr–Ni–B–C powder

Sercombe

Schaffer

2010

Materials Science and Engineering: A

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“…7 and 8), no eutectic network was formed, even at high boron amounts. The reason for this behavior is the high affinity of boron to nitrogen [8]. The formation of different nitrides and oxynitrides during the sintering process is possible (Fig.…”

Section: Sintering In Nitrogen Atmospherementioning

confidence: 96%

Characterization of the distribution of the sintering activator boron in powder metallurgical steels with SIMS

et al. 2004

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Powder metallurgy is a well-established method for manufacturing ferrous precision parts. A very important step is sintering, which can be strongly enhanced by the formation of a liquid phase during the sintering process. Boron activates this process by forming such a liquid phase at about 1200 degrees C. In this work, the sintering of Fe-B was performed under the protective atmospheres of hydrogen, argon or nitrogen. Using different grain sizes of the added ferroboron leads to different formations of pores and to the formation of secondary pores. The effect of boron was investigated by means of Secondary Ion Mass Spectrometry (SIMS) supported by Scanning Electron Microscopy (SEM) and Light Microscopy (LM). To verify the influence of the process parameters on the mechanical properties, the microstructure (pore shape) was examined and impact energy measurements were performed. The concentrations of B in different samples were varied from 0.03-0.6 weight percent (wt%). Higher boron concentrations are detectable by EPMA, whereas the distributions of boron in the samples with interesting overall concentration in the low wt% range are only detectable by means of SIMS. This work shows that the distribution of boron strongly depends on its concentration and the sintering atmosphere used. At low concentration (up to 0.1 wt%) there are boride precipitations; at higher concentration there is a eutectic iron-boron grain boundary network. There is a decrease of the impact energy observed that correlates with the amount of eutectic phase.

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Sintering Mechanisms of Boron Alloyed AISI 316L Stainless Steel

Cited by 47 publications

References 4 publications

Activated sintering of P/M duplex stainless steel powders

Activated sintering of P/M duplex stainless steel powders

The sintering of an Fe–Cr–Ni–B–C powder

Characterization of the distribution of the sintering activator boron in powder metallurgical steels with SIMS

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