Analysis ofx Phase Precipitation in Aged 2205 Duplex Stainless Steel

Analysis ofx Phase Precipitation in Aged 2205 Duplex Stainless Steel

Analysis ofZ phase precipitation in 2205 duplex stainless steel aged at 700 and 750 ~C has been investigated systematically. The experimental results showed that X phase forms prior to the precipitation of δ phase and disappears once tr phase starts to precipitate. This phenomenon indicates that a p...

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Veröffentlicht in:武汉理工大学学报：材料科学英文版 2015 (3), p.591-595
1. Verfasser: LIU Heping SUN Hu＇er LIU Bin LI Dazhao SUN Fenger ZHANG Yongtao
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双相不锈钢
析出
沉淀
界面生长
相分析
老年人
选区衍射
铁素体相
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creator LIU Heping SUN Hu＇er LIU Bin LI Dazhao SUN Fenger ZHANG Yongtao
description Analysis ofZ phase precipitation in 2205 duplex stainless steel aged at 700 and 750 ~C has been investigated systematically. The experimental results showed that X phase forms prior to the precipitation of δ phase and disappears once tr phase starts to precipitate. This phenomenon indicates that a phase nucleated and consumed the Z phase. The δ phase nucleated mairdy at ferrite/austenite interface and grew inwards into the ferrite phase. The morphology of a phase reveals a coral-like structure at the temperature of 700 ℃ for 120 min followed by quenching in water. The decomposition of ferrite occurs via the following eutectoid reaction： F---＊o＇＋y2. The selected area diffraction pattern of zone axes is[3 1 3-][3 1 3], indicating a characteristic orientation relationship between X phase and δ-ferrite.
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subjects 双相不锈钢
析出
沉淀
界面生长
相分析
老年人
选区衍射
铁素体相
title Analysis ofx Phase Precipitation in Aged 2205 Duplex Stainless Steel
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