再結(jié)晶織構(gòu)的影響
( 1. 東北大學(xué) 材料與冶金學(xué)院, 沈陽 110004;
2. Letam, CNRS-UMR 7078, University of Metz, Ile du Saulcy, 57045 Metz, France)
摘 要: 利用三維取向分布函數(shù)（ODF）和透射電鏡（TEM）等方法研究了電場退火對冷軋3104鋁合金板材再結(jié)晶、 第二相粒子和再結(jié)晶織構(gòu)的影響。結(jié)果表明： 電場退火具有抑制鋁合金板再結(jié)晶形核和長大的作用， 但并未改變其再結(jié)晶形成機(jī)制； 促進(jìn)了第二相粒子MnAl6長大； 有利于提高立方織構(gòu)（{001}〈100〉）的強(qiáng)度， 同時(shí)降低了某些軋制織構(gòu)的強(qiáng)度。 根據(jù)Gibbs-Thomson理論， 探討了電場退火時(shí)3104鋁合金板再結(jié)晶及立方織構(gòu)形成機(jī)制。
關(guān)鍵字: 電場; 3104鋁合金板; 顯微組織; 再結(jié)晶織構(gòu); 第二相粒子
recrystallization texture of 3104 aluminum alloy sheets
WANG Fu1, C. Esling2
（ 1. School of Materials and Metallurgy,
Northeastern University, Shenyang 110004, China;
2. Letam, CNRS-UMR 7078, University of Metz,
Ile du Saulcy, Metz 57045, France）
Abstract: The effects of electric field on microstructure, precipitation and recrystallization texture of cold rolled 3104 aluminum alloy sheets were investigated by X-ray-ODF analysis combined with TEM morphology. The cold rolled 3104 aluminum alloy sheets were treated at different temperatures for 90min with conventional annealing and electric field annealing, respectively. The result shows that the electric field annealing retards the recovery and recrystallization processes, reduces the mean grain size, and increases the size of MnAl6 and enhances cube texture. According to Gibbs-Thomson’s theory, such effects are attributed to the fact that the electric field decreases the driving force of recrystallization, and then hinders the nucleation and grain-growth. As the S oriented grains have relatively high storage energy, they have strong preference to recrystallization. As a result, the cube texture is enhanced.
Key words: electric field annealing; 3104 aluminum alloy; recrystallization texture; precipitation
