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基于熱加工圖的鉬金屬熱變形特征研究
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航空基礎(chǔ)科學(xué)基金（03H53048）


Study on Hot Deformation Characteristics of Molybdenum Based on Processing Map
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    摘要:

    通過(guò)熱壓縮試驗(yàn)研究鉬金屬在應(yīng)變速率為0.01~10 s-1，變形溫度為900~1450 ℃條件下的熱變形性能，建立了基于流變應(yīng)力的鉬金屬熱變形的本構(gòu)方程。綜合考慮應(yīng)變速率和變形溫度對(duì)材料微觀結(jié)構(gòu)及性能的影響，根據(jù)動(dòng)態(tài)材料模型（DMM）建立了鉬金屬的熱加工圖，并利用加工圖確定了熱變形時(shí)的流變失穩(wěn)區(qū)，分析了不同區(qū)域鉬金屬的高溫變形特征。

    Abstract:

    Hot deformation characteristics of molybdenum was investigated by hot compression tests carried out in the temperature range of 900-1450 °C and strain rate range of 0.01-10 s-1. A constitutive equation of hot deformation of molybdenum based on the flow stress was established. With consideration of the effects of the deformation temperatures and the stain rates on microstructures and properties of molybdenum, processing maps were established based on the dynamic material model (DMM). And the instability zones of flow behavior could also be recognized by the maps. The hot deformation characteristics of molybdenum in different zones were also analyzed.

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王玉鳳,李付國(guó),趙 偉,劉趁意,付靜波.基于熱加工圖的鉬金屬熱變形特征研究[J].稀有金屬材料與工程,2009,38(8):1358~1362.[Wang Yufeng, Li Fuguo, Zhao Wei, Liu Chenyi, Fu Jingbo. Study on Hot Deformation Characteristics of Molybdenum Based on Processing Map[J]. Rare Metal Materials and Engineering,2009,38(8):1358~1362.]
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  • 收稿日期:2008-07-27
  • 最后修改日期:2009-05-16
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