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RECRYSTALLIZATION-INDUCED PLASTICITY IN 18Ni MARAGING STEEL UNDER ELASTIC STRESS

YIN Zhongda Harbin Institute of Technology , Harbin , China ZHOU Yongkang Shanghai Centrifugal Machinery Research Institute , Shanghai , China YIN Zhongda Faculty of Heat Treatment of Materials , Harbin Institute of Technology , Harbin 150006 , China

金属学报(英文版)

An approach to study the recrystallization-induced plasticity(RIP)phenomenon in the 18Ni maraging steel under the elastic stress has been made by the analysis of dynamic behaviour at elevated temperatures,the phenomenological analysis of dynamic strain feature curves,the confirmation of phase transformation point and TEM observation of RIP processing itself.

关键词: elastic stress , null , null , null

A STUDY ON RECRYSTALLIZATION-INDUCED PLASTICITY IN DT4 PURE IRON

Z. H. Lai , J. C. Zhu and Z. D. Yin (School of Materials Science and Engineering , Harbin Institute of Technology , Harbin 150001 , China

金属学报(英文版)

The phenomenon of stress-induced recrystallization (SIR) and recrystallization- induced plasticity (RIP) in DT4 pure iron was investigated by means of hightemperature tensile test under a constant elastic stress and microstructural observation. It is shown that the macroscopic plastic flow of cold-rolled specimens, which occured during heating process under pre-loaded elastic stress, resulted from stressinduced recrystallization and recrystallization-induced plasticity. The characteristics and mechanism of this phenomenon were also preliminarily discussed.

关键词: elastic stress , null , null , null

18Ni合金在弹性应力作用下再结晶诱发塑性现象

尹钟大 , 周永康

金属学报

在研究18Ni(2450MPa级)马氏体时效钢循环相变超塑性的时候,发现了经40—70％冷轧后的试样,在弹性应力作用下加热过程中,产生再结晶诱发塑性(RIP)现象。本文通过该合金在高温下的力学行为的分析、动态应变特征曲线的唯象学分析、相变点的验证以及RIP过程的TEM观察,初步探讨了RIP现象的产生机制。

关键词: 弹性应力 , recrystallization , plasticity , maraging steel

LF6防锈铝的再结晶诱发塑性

尹钟大 , 米景川 , 顾朋

材料研究学报

本文研究了LF6防锈铝在预加弹性应力作用下,再结晶诱发塑性(RIP)现象,对RIP 试验的δ-T 曲线的分析和特征点的TEM 观察表明,该合金冷变形组织在弹性应力作用下加热过程中产生的宏观塑性流变,是再结晶诱发塑性的结果,初步探讨了该合金的高温拉伸性能和再结晶诱发塑性的机理。

关键词: 弹性应力 , recrystallization , plasticity , rust-proof aluminum

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