Study on dynamic recrystallization behavior of powder metallurgy molybdenum

Hanfang Xie, Fuguo Li, Yufeng Wang, Jingbo Fu

科研成果: 期刊稿件文章同行评审

13 引用 (Scopus)

摘要

Hot workability of powder metallurgy molybdenum in the temperature range of 900-1450°C and strain rate range of 0.01-10 s-1 was investigated by hot compression tests on a Gleeble-1500 thermal mechanical simulator. According to experimental results, the dynamic recrystallization (DRX) behavior of powder metallurgy molybdenum was studied and its θ-sigma; and ∂θ/∂sigma;-sigma; curves were established. Based on working hardening rate-stress (θ-sigma;) and working hardening rate-strain (θ-ε) curves, the critical strain (c of DRX was determined. The average grain size (D) and Zener-Hollmon parameter (Z) during DRX process obey the following equation: lnD=3.65597-0.05409lnZ; these researches provide fundamental data for cogging and hot working technology of powder metallurgy molybdenum.

源语言英语
页(从-至)669-672
页数4
期刊Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
40
4
出版状态已出版 - 4月 2011

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