Recent Studies on the Nature and State of Carbon Atoms in Iron

Ohtsuka, Hideyuki; Tsuzaki, Kaneaki

doi:10.2355/isijinternational.isijint-2021-334

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The Crystal Structure Of As-quenched Fe-c Martensite1

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2024

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Cited by 3 publications

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“…11,12) The model of Sherby et al is quite complicated and is related to the belief that a sharp transition ('H' point) occurs at 0.6%C, see also a recent review. 13) In fact, this is unlikely to be true. Very fast cooling using 'splat quenching' resulted in tetragonal martensite in an iron-carbon material with as little as 0.21%C according to Cadeville et al 14) and similar structures also occur in Fe-Ni-C alloys with less rapid cooling.…”

Section: The Crystal Structure Of As-quenched Fe-c Martensitementioning

confidence: 98%

The Crystal Structure of As-quenched Fe–C Martensite

Hutchinson,

Lynch,

Kada

et al. 2024

ISIJ Int.

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Section: The Crystal Structure Of As-quenched Fe-c Martensitementioning

confidence: 98%

The Crystal Structure of As-quenched Fe–C Martensite

Hutchinson,

Lynch,

Kada

et al. 2024

ISIJ Int.

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Solid‐State Bonding of Iron or Steel with Stainless Steels by Spark Plasma Sintering Bonding

Watanabe,

Furuhashi,

Chiba

et al. 2024

Adv Eng Mater

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In this study, pure iron, S45C carbon steel (Fe–0.45mass%C), carburized iron, and nitrided iron are bonded with two types of stainless steels, i.e., SUS304 austenitic stainless steel (Fe–18mass%Cr–8mass%Ni) with face center cubic structure or SUS430 ferritic stainless steel (Fe–18mass%Cr) with body center cubic structure by a spark plasma sintering (SPS) machine. Bonding experiments are carried out by SPS bonding. It is found that the bonding temperature of the S45C/SUS samples is lower than that of Fe/SUS samples, and carbon atoms in the S45C play important role on the bonding performance. The bonding temperature for SUS304/SUS430 sample is more than 30 °C higher than those for the Fe/SUS and S45C/SUS samples. The presence of thin chromium oxides on both stainless steels reduces the bonding performance of SUS304/SUS430 sample. Better bonding performance is found for the carburized and nitrided iron for bonding with stainless steels. However, continuous single‐phase layer on the surface leads to reduce the bonding performance. It is concluded that not only the concentration of carbon and nitrogen but also the phase configuration in the iron at interface strongly influences the bonding performance between iron alloys and stainless steels by SPS bonding.

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