铜锌合金及20CrMnTi钢中温塑性加工的规律和机理的研究

周向东

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铜锌合金及20CrMnTi钢中温塑性加工的规律和机理的研究

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- 铜锌合金及20CrMnTi钢中温塑性加工的规律和机理的研究
- A Study of the Processing Law and Mechanism of the Plastic Deformation in the Cu-Zn Alloy and 20CrMnTi Steel Under the Moderate Temperature
- 光学精密工程 1990年0卷第1期页码：36-39
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- 网络出版日期：1990-02-15，
  
  纸质出版日期：1990-02-15
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周向东. 铜锌合金及20CrMnTi钢中温塑性加工的规律和机理的研究[J]. 光学精密工程, 1990,(1): 36-39

Zhou Xiangdong. A Study of the Processing Law and Mechanism of the Plastic Deformation in the Cu-Zn Alloy and 20CrMnTi Steel Under the Moderate Temperature[J]. Editorial Office of Optics and Precision Engineering, 1990,(1): 36-39
周向东. 铜锌合金及20CrMnTi钢中温塑性加工的规律和机理的研究[J]. 光学精密工程, 1990,(1): 36-39 DOI：

Zhou Xiangdong. A Study of the Processing Law and Mechanism of the Plastic Deformation in the Cu-Zn Alloy and 20CrMnTi Steel Under the Moderate Temperature[J]. Editorial Office of Optics and Precision Engineering, 1990,(1): 36-39 DOI：

摘要

本文研究了H68黄铜和20CrMnTi 钢的动态应变时效(DSA)和动态退火(DA)对其机械性能的影响。试验是在300—1100K 的温度范围内进行的

应变速度为1.1×10

-2

-1

到1.1×10

-4

-1

平均晶粒尺寸为10μm。试验结果表明:H68黄铜的最大均匀应变量和加工硬化参数均在某一温度范围内出现一个峰值

而20CrMnTi 钢则在高温区和低温区分别形成一个峰值。试验的另一个结果是发现动态应变时效现象与动态退火现象在靠近临界温度时有一定的重叠。建议在研究中温塑性加工的规律时

有必要考虑这两种现象的影响。

Abstract

The effects of the dynamic strain ageing(DSA)and dynamic annealing(DA)on the mechanical properties of a H68 brass and 20CrMnTi steel were investigated by the experiment in which the temperature were between 300k and 1100k with 10μm grain size and strain rates between 1.1×10

-2

/s and 1.1×10

-4

/s.The results have shown that uniform elongation and work hardening parameters of H68 have a peak value in a temperature region

while that of 20CrMnTi have peak values both in high and low temperature regions respectively

Another result is that DSA and DA phenomena can be found simultaneously if it is close to the critical temperature.Therefore it is suggested that the influnces of these two phenomena should be considered when the processing is carried out at the intermediate temperature.

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