Microstructural evolution of commercial pure iron during directional annealing
Microstructural evolution of commercial pure iron during directional annealing
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商业纯铁定向退火过程中的微观结构演变
DOI：
10.1016/j.msea.2006.02.001
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发表时间：
2006-04
期刊：
影响因子：
6.4
通讯作者：
中科院分区：
文献类型：
--
作者：
研究了冷轧纯铁定向退火过程中的组织演变。在850°C的热区温度（HZT）和200°C/cm的温度梯度（TG）以及5μm/s的最佳拉伸速度下，在冷轧70%的厚度压下量的试样中产生了最大纵横比为23.6的柱状晶粒。结果表明，柱状晶组织是由于晶粒异常长大而形成的。存在一个临界粗化温度，低于该温度退火时不会发生二次再结晶，因此不会产生柱状晶组织。初次再结晶后的晶粒尺寸对组织演变没有明显的影响。由于在热区前面的小晶粒的强晶体学织构，柱状晶粒具有小的纵横比。柱状晶晶界多为大角度重合点阵晶界。具有孪晶或低角度晶界的晶粒容易在柱状组织中形成岛状晶粒。
Microstructural evolution during the directional annealing of the cold-rolled pure iron has been investigated. Columnar grains with the largest aspect ratio of 23.6 were produced in the specimen cold-rolled for 70% of thickness reduction at the hot zone temperature (HZT) of 850°C and a temperature gradient (TG) of 200°C/cm with an optimum drawing velocity of 5μm/s. It was found that the columnar grain structure was developed due to abnormal grain growth. There is a critical coarsening temperature, below which the secondary recrystallization does not occur during the annealing; consequently no columnar grain structure can be produced. No obvious evidence shows that the grain size after primary recrystallization has an influence on the microstructural evolution. Due to the strong crystallographic texture of the small grains ahead of the hot zone, the columnar grains have small aspect ratios. Most of the boundaries of the columnar grain are high angle coincidence site lattice (CSL) grain boundaries. The grains with twin or low angle grain boundaries are apt to form island grains in the columnar structure.
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DOI：
10.1016/0001-6160(86)90064-7
发表时间：
1986-05
期刊：
Acta Metallurgica
影响因子：
--
作者：
G. Abbruzzese;K. Lücke
通讯作者：
G. Abbruzzese;K. Lücke
DOI：
10.1016/s0921-5093(96)10463-9
发表时间：
1997-02
影响因子：
6.4
作者：
A. Godfrey;John W. Martin
通讯作者：
A. Godfrey;John W. Martin
DOI：
10.4028/www.scientific.net/msf.467-470.917
发表时间：
2004-05
期刊：
Materials Science Forum
影响因子：
--
作者：
H. Park;Young‐Chang Joo;Doh-Yeon Kim;Jong Tae Park;Jae Kwan Kim;N. Hwang
通讯作者：
H. Park;Young‐Chang Joo;Doh-Yeon Kim;Jong Tae Park;Jae Kwan Kim;N. Hwang
影响因子：
4.7
作者：
A. Humphreys;S. Shaw;John W. Martin
通讯作者：
A. Humphreys;S. Shaw;John W. Martin
DOI：
10.1201/9781351045636-140000432
发表时间：
2004-10
期刊：
Encyclopedia of Aluminum and Its Alloys
影响因子：
--
作者：
Weimin Mao
通讯作者：
Weimin Mao