Activation Energy for Superplastic Flow Above Critical Temperature of Die Steels

WEN Jiu-ba; ZHANG Ke-ke; CHEN Fu-xiao

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Activation Energy for Superplastic Flow Above Critical Temperature of Die Steels

机译：模具钢临界温度以上超塑性流动的活化能

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Some commercial cold working die steels GCrl5 and CrWMn with ultra-fine grain size were chosen as tested materials to research the activation energy for superplastic flow at different temperatures and strain rates above critical temperature. Based on the Arrhenius equation, the activation energy for superplastic flow is evaluated. The activation energy at constant strain rate is estimated by the log sigma_(tau) VS 1/T relationship. The results show that the activation energy is usually small under the conditions of optimal flow. The characteristics of superplastic deformation of steels above the critical temperature were also analyzed.

机译：选择了一些具有超细晶粒尺寸的商用冷作模具钢GCrl5和CrWMn作为测试材料，以研究超塑性流在不同温度和高于临界温度的应变速率下的活化能。基于Arrhenius方程，评估超塑性流动的活化能。通过log sigma_t VS 1 / T关系来估算恒定应变率下的活化能。结果表明，在最佳流动条件下，活化能通常较小。还分析了临界温度以上钢的超塑性变形特征。

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来源
《Journal of Iron and Steel Research International》 |2006年第5期|p.4-6|共3页
作者
WEN Jiu-ba; ZHANG Ke-ke; CHEN Fu-xiao;
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作者单位

School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China;

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原文格式 PDF
正文语种 eng
中图分类冶金工业;
关键词
superplasticity; superplastic working; activation energy;

机译：超塑性;超塑性加工;活化能;

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专利

1. Activation Energy for Superplastic Flow Above Critical Temperature of Die Steels [J] . WEN Jiu-ba, ZHANG Ke-ke, CHEN Fu-xiao Journal of iron and steel research . 2006,第5期

机译：模具钢临界温度以上超塑性流动的活化能
2. Activation energy for superplastic flow in aluminum matrix composites exhibiting high-strain-rate superplasticity [J] . M. Mabuchi, K. Higashi Scripta materialia . 1996,第12期

机译：表现出高应变速率超塑性的铝基复合材料中超塑性流动的活化能
3. Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel [J] . Djordje Drobnjak, Nenad Radovi, Milojica Andjeli, Steel Research . 1997,第7期

机译：试验变量对V型微合金钢热加工和临界再结晶温度下表观活化能的影响
4. The Activation Energy of Superplastic Flow above the Critical Temperature for Steel CrWMn [C] . J. B. Wen, F. X. Chen, K. K. Zhang, International Conference on Superplasticity in Advanced Materials . 2007

机译：高于钢CRWMN临界温度的超塑性流动的激活能量
5. FREE VOLUME THEORY OF DIFFUSION INTO POLYMERS. PART 1. METHOD OF PREDICTING ACTIVATION ENERGIES OF DIFFUSION FOR GASES INTO ELASTOMERS. PART 2. DIFFUSION OF NON-IONIC DYES INTO SEMI-CRYSTALLINE POLY(ETHYLENE TEREPHTHALATE) FILMS. PART 3. RELATIONSHIP BETWEEN GLASS-TRANSITION AND DYEING-TRANSITION TEMPERATURES. [D] . KOSIYANON, ROCHANA. 1981

机译：扩散成聚合物的自由体积理论。第1部分。预测气体向弹性体中扩散的活化能的方法。第2部分。非离子染料扩散到半结晶聚对苯二甲酸乙二酯薄膜中。第3部分。玻璃化转变温度与染色转变温度之间的关系。
6. Low temperature superplasticity and thermal stability of a nanostructured low-carbon microalloyed steel [O] . J. Hu, L.-X. Du, G.-S. Sun, -1

机译：纳米结构低碳微合金钢的低温超塑性和热稳定性
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8. Preliminary investigation of corrosion by molten sodium hydroxide flowing in tubes of AISI 347 stainless steel, Inconel, and nickel having average outer-wall temperatures of 1500 F and a circumferential temperature gradient of 20 F [R] . Mosher, Don R, Desmon, Leland G 1952

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Activation Energy for Superplastic Flow Above Critical Temperature of Die Steels

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