应用 Processing Map 研究 D2 钢高温变形的动态应变时效

Study on Dynamic Strain Aging of D2 Steel during High Temperature Deformation Using Processing Map

应用以动态材料模型为基础的ＰｒｏｃｅｓｓｉｎｇＭａｐ研究了Ｄ２钢在变形温度９００～１１６０℃、变形速率０．０１～１０．００ｓ－１区间的动态应变时效规律。结果表明，Ｄ２钢在变形温度为１１２０～１１５０℃、变形速率为０．０１ｓ－１条件下发生动态应变时效，并表现出强烈的硬化效应。同时，应变速率敏感系数小于零可以作为发生动态应变时效的一个标志。

The aim of this article is to investigate dynamic strain aging (DSA) of D2 steel deformed in the temperature range from 900～1 160 ℃ with strain rate ranging from 0.01～10.00 s-1 by Processing Map on the basis of the dynamic materials model. The result is that D2 steel does behave with DSA at the temperature from 1 120～1 150 ℃ at a strain rate 0.01 s-1 and is strongly hardened. Negative strainrate sensitivity is a symbol of DSA.