The effect of deformation-induced-ferrite-transformation on nanometre-sized carbides in Ti-Mo ferritic steel

The effect of deformation-induced-ferrite-transformation on nanometre-sized carbides in Ti-Mo ferritic steel

In this study, the effect of deformation-induced-ferrite-transformation (DIFT) rolling on precipitation in Ti-Mo ferrite matrix micro-alloyed steel was investigated by comparing to rolling in austenite non-recrystallisation region. The precipitate volume fraction and precipitation-starting time-temp...

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Veröffentlicht in:Materials science and technology 2017-07, Vol.33 (10), p.1215-1223
Hauptverfasser: Ning, Zhen, Cai, Qingwu, Xie, Baosheng, Dong, Entao
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Sprache:eng
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DIFT rolling
Precipitation
precipitation kinetics
precipitation strengthening
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container_title Materials science and technology
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creator Ning, Zhen
Cai, Qingwu
Xie, Baosheng
Dong, Entao
description In this study, the effect of deformation-induced-ferrite-transformation (DIFT) rolling on precipitation in Ti-Mo ferrite matrix micro-alloyed steel was investigated by comparing to rolling in austenite non-recrystallisation region. The precipitate volume fraction and precipitation-starting time-temperature (PTT) curves under two kinds of process were calculated by thermodynamic and kinetic calculation, and the effects of non-recrystallisation rolling and DIFT rolling on the contribution of strengthening mechanisms were quantitatively analysed. The results showed that comparing with rolling in the austenite non-recrystallisation region, carbides in the steel by DIFT rolling were finer and more uniform. Moreover, DIFT rolling could enhance fine grain strengthening and precipitation strengthening simultaneously, and the increments of fine grain and precipitation strengthening were 34 and 63.7 MPa, respectively.
doi_str_mv 10.1080/02670836.2016.1275450
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The precipitate volume fraction and precipitation-starting time-temperature (PTT) curves under two kinds of process were calculated by thermodynamic and kinetic calculation, and the effects of non-recrystallisation rolling and DIFT rolling on the contribution of strengthening mechanisms were quantitatively analysed. The results showed that comparing with rolling in the austenite non-recrystallisation region, carbides in the steel by DIFT rolling were finer and more uniform. 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The precipitate volume fraction and precipitation-starting time-temperature (PTT) curves under two kinds of process were calculated by thermodynamic and kinetic calculation, and the effects of non-recrystallisation rolling and DIFT rolling on the contribution of strengthening mechanisms were quantitatively analysed. The results showed that comparing with rolling in the austenite non-recrystallisation region, carbides in the steel by DIFT rolling were finer and more uniform. 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subjects DIFT rolling
Precipitation
precipitation kinetics
precipitation strengthening
title The effect of deformation-induced-ferrite-transformation on nanometre-sized carbides in Ti-Mo ferritic steel
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