文章信息/Info

Title:

Microstructure Evolution of 1235 Aluminum Alloy During Cold Working

文章編號:

1674-3962(2024)04-0331-05

作者:

余黨會; 王生寧; 劉建興

酒鋼集團甘肅東興鋁業(yè)有限公司鋁業(yè)研究院，甘肅 嘉峪關(guān) 735100

Author(s):

YU Danghui; WANG Shengning; LIU Jianxing

Aluminum Research Institute, Gansu Dongxing Aluminum Co., Ltd. of JISCO,Jiayuguan 735100, China

關(guān)鍵詞:

1235鋁合金; 雙零箔; 第二相; 均勻化退火

Keywords:

1235 aluminum alloy;  double zero foil;  second phase;  homogenization annealing

分類號:

TG146.21；TG339

DOI:

10.7502/j.issn.1674-3962.202205020

文獻標志碼:

A

摘要:

為進一步掌握鋁箔坯料在冷加工過程中的組織演變規(guī)律，以1235鋁合金雙零箔坯料為研究對象，探究其7.0 mm厚鑄軋坯料冷軋至3.8，1.8，0.9，0.5 mm過程中第二相形貌、尺寸的變化情況。結(jié)果表明，鑄軋坯料冷軋一道次后均勻化退火未改變第二相的屬性，只是在一定程度上改變了相的尺寸，組織內(nèi)的θ相(FeAl3)會發(fā)生溶解和均勻化擴散，且在高溫下部分θ析出相形貌發(fā)生了變化，長大變成針狀；后在一道次冷軋至1.8 mm過程中針狀相發(fā)生了明顯的“折斷”，但在隨后的冷軋過程中，針狀相被破碎至5～8 μm范圍內(nèi)以后再很難被進一步破碎，驗證了針狀第二相“硬而脆”的特性，說明在退火過程中控制尺寸＞5 μm第二相的數(shù)量的重要性。

Abstract:

In order to master the rule of microstructure evolution of aluminum double zero foil in the process of cold-rolling, the 1235 aluminum alloy foil billet was studied in this paper, the morphology and size change of the second phase of the 7.0 mm thickness cast-rolling foils during the cold working was investigated. The results showed that the homogenization annealing for the first pass rolled cast-rolling foils does not change the property of the second phase, but only changes the phase size to a certain extent, some precipitates θ(FeAl3) dissolve, the morphology of partial θ precipitates tends to grow up to needle-liked shape; and then the needle-liked structures are broken during cold rolling to 1.8 mm, the needle-liked phases are difficult to be further broken after being broken in the range of 5~8 μm, the “hard and brittle”characteristics of the needle-liked second phases is verified, and the importance of controlling the quantity of the second phase with the size larger than 5 μm during annealing is explained.