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Effects of Ageing with Electric Pulse Treatment on Shape Memory Effect and Precipitation of Cr23C6 Carbide in a Pre-deformed Fe-Mn-Si-Cr-Ni-C Alloy
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Effects of Ageing with Electric Pulse Treatment on Shape Memory Effect and Precipitation of Cr23C6 Carbide in a Pre-deformed Fe-Mn-Si-Cr-Ni-C Alloy
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NSFC (50501015, 50871072)

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    摘要:

    研究了電脈沖時(shí)效對(duì)預(yù)變形Fe-Mn-Si-Cr-Ni-C合金形狀記憶效應(yīng)及Cr23C6析出的影響。結(jié)果顯示電脈沖處理能加速Cr和C原子的遷移及Cr23C6碳化物的析出，降低時(shí)效溫度，縮短時(shí)效時(shí)間，能誘發(fā)Cr23C6碳化物的形核。在973 K時(shí)效時(shí)具有電脈沖處理的預(yù)變形Fe-Mn-Si-Cr-Ni-C合金與沒(méi)有電脈沖處理的合金相比，其形狀回復(fù)率在30 min內(nèi)從淬火合金的32%提高到最大值89.2%。

    Abstract:

    Effects of ageing with electric pulse treatment on shape memory effect and precipitation of Cr23C6 carbide in a pre-deformed Fe-Mn-Si-Cr-Ni-C alloy were investigated. The results showed that electric pulse treatment could accelerate the migration of Cr and C atoms and precipitation of Cr23C6 carbides, lower ageing temperature, shorten ageing time and induce the nucleation of Cr23C6 carbides. Therefore, the shape recovery ratio was improved to the maximum value 89.2% from 32% of a water-quenching alloy within 30 min in a pre-deformed Fe-Mn-Si-Cr-Ni-C alloy aged with electric pulse treatment compared to alloys aged without electric pulse treatment at 973 K.

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楊世洲,李 寧,文玉華,彭華備. Effects of Ageing with Electric Pulse Treatment on Shape Memory Effect and Precipitation of Cr23C6 Carbide in a Pre-deformed Fe-Mn-Si-Cr-Ni-C Alloy[J].稀有金屬材料與工程,2013,42(2):238~242.[Yang Shizhou, Li Ning, Wen Yuhua, Peng Huabei. Effects of Ageing with Electric Pulse Treatment on Shape Memory Effect and Precipitation of Cr23C6 Carbide in a Pre-deformed Fe-Mn-Si-Cr-Ni-C Alloy[J]. Rare Metal Materials and Engineering,2013,42(2):238~242.]
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  • 收稿日期:2012-02-09
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