Transactions of Materials and Heat Treatment

Title：Method of improving structure uniformity of big size titanium open-die forgings

Authors： YAO Ze-kun~(1) GUO Hong-zhen~(1) ZOU Yong-heng~(2) TAO Hong~(2) (1.School of Materials Northwestorn Polytechnical University Xi'an Shanxi 710072 China 2.Jingdezhen Aero Forging & Casting Incorporated Company Jingdezhen Jiangxi 333039 China)

Unit：

KeyWords： open-die forging slenderness ratio drawing out microstructure and macrostructure

ClassificationCode：TG319

year,vol(issue):pagenumber：2005,30(5):4-6

Abstract：

In this paper,a method of improving structure uniformity of TC4 titanium open-die forgings of large cross section have been put forward as the big size bar is used.For the big size bar with slenderness ratio being greater than 3,heavy deformation upset could not be used and big prior β grains in raw stock could not be broken.When drawing out method is used through alternating tetragonal cross-section into hexagonal cross-section on broad anvil and combining β treatment,the large deformation zone in deformation body is transferred and the banded α can be broken. It makes macrostructure and microstructure of open-die forging uniform and a good tensile property at room temperature can be achieved.

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Reference：

[1]姚泽坤,苏华,刘庆泉,等.热加工工艺参数对TC11钛合金叶片显微组织细化、球化的影响[J].热加工工艺,1995,(1):6 10.
[2]George Krauss.Deformation,Processing,and Structure,ASM,Ohio,1982,309.
[3]陈玉文,王金友.钛科学与工程[C].第八届全钛及钛合金学术交流会文集,上海钢铁研究所,1993:201 207.
[4]姚泽坤,郭鸿镇,苏祖武.改善钛合金棒材和锻件低倍和高倍组织的研究[J].西北工业大学学报,1992,10(4):487 494.
[5]张文毓.TA5钛合金大厚板组织和性能均匀性研究[J].稀有金属,1997,21(z1):159 162.
[6]宫波,徐振声,赖祖涵.钛科学与工程[C].第七届全国钛及钛合金交流会文集,中南工业大学出版社,1990:206 208.
[7]Salishchev G A,Vliakhmetov O R,Galeyev R M.Formation ofsubmicrocrystalline structure in the titanium alloy VT8 and itsinfluence on mechanical properties[J].Journal of MaterialsScience,1993,28:2898 2902.
[8]姚泽坤,郭鸿镇,苏祖武,等.双性能钛合金压气机盘的成形机理[J].中国有色金属学报,2000,10(3):378 382.

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