Transactions of Materials and Heat Treatment

Title：Influence of cooling methods on microstructure and properties for hot rolled Ti-6Al-4V bar with small-size

Authors： Cui Wenjun1 2 Zhu Xiaocui1 2 Ren Weining1 2

Unit： 1.Western Titanium Technologies Co. Ltd. 2.National and Local Joint Engineering Research Center for Titanium Alloy Processing Technology

KeyWords： radial forging machine main engine structure hammer adjustment forging process performance preformance evaluation indicator

ClassificationCode：TG146.2+4

year,vol(issue):pagenumber：2021,46(12):224-227

Abstract：

The ingot with the diameter of Φ620 mm after two times of vacuum consumable melting was drawn up to a rectangular billet with a cross-sectional side length of 120 mm by forging, which was continuously formed and rolled in multiple passes to the target size of the small-sized bar by combining with 350# and 250# horizontal rolling mills. Then, three kinds of conding methods such as conventional air cooling, water tank cooling and spray cooling were used to cool the materials produced in the same process route during the final rolling cooling, and the microstructure changes and mechanical property results were analyzed and comparative researched. Results show that under the same process production route, the most uniform isometric of cross-section microstructure of bar can be obtained by water tank cooling, and the most balanced yield-tensile strength ratio of bar can be obtained by air cooling. Thus, the microstructures and mechanical properties are different obtained by different treatment methods, and the different process routes can be set to guide the production according to different needs of market.

Funds：

陕西省重点研发计划项目（2020ZDLGY01-07）

作者简介：崔文俊（1990-），男，学士，工程师 E-mail：524198775@qq.com

Reference：

[1] 张喜燕, 赵永庆,白晨光.钛合金及应用[M]. 北京：化学工业出版社,2005.

Zhang X Y, Zhao Y Q, Bai C G. Titanium Alloy and Application[M]. Beijing: Chemical Industry Press,2005.

[2] 石德珂. 材料科学基础[M].北京：机械工业出版社，1998.

Shi D K. Material Science Fundamental [M]. Beijing: China Machine Press, 1998.

[3] 邵威, 邓沛然,仇健桐,等. Ti6Al4V高强钛合金的热拉深成形 [J]. 锻压技术,2020,45(5):56-60.

Shao W,Deng P R,Qiu J T,et al. Warm drawing on Ti6Al4V high strength titanium alloy[J].Forging & Stamping Technology,2020,45(5): 56-60.

[4] 吴捍疆, 张丰收,燕根鹏. 基于数值模拟的TC4钛合金航空叶片精锻过程的金属流动规律 [J]. 锻压技术,2020,45(2):7-14.

Wu H J,Zhang F S,Yan G P. Flow law of metal in precision forging for TC4 titanium alloy aeronautical blade based on numerical simulation [J]. Forging & Stamping Technology，2020,45(2):7-14.

[5] 洪凌翔, 孟庆通. TC11钛合金筒类精锻件成形工艺 [J]. 锻压技术，2019,44(9):7-11.

Hong L X,Meng Q T. Precision forging process of TC11 titanium alloy cylinder [J]. Forging & Stamping Technology，2019,44(9):7-11.

[6] 周渝庆, 张祥. 机械紧固件用新型钛合金的锻造温度优化 [J]. 锻压技术，2020,45(1):35-40.

Zhou Y Q，Zhang X. Optimization on forging temperature of new titanium alloy for mechanical fasteners [J]. Forging & Stamping Technology，2020,45(1):35-40.

[7] 周晓虎, 刘卫,郝芳,等. 准β锻造工艺对TC21钛合金大型锻件组织及性能的影响 [J]. 锻压技术,2020,45(6):29-35.

Zhou X H,Liu W,Hao F,et al. Influence of quasiβ forging process on microstructure and properties of TC21 titanium alloy large forgings [J]. Forging & Stamping Technology，2020,45(6):29-35.

[8] ETTC2-A.Microstructural standards for tianium alloy bars[S].

[9] 鲍利索娃. 钛合金金相学[M]. 陈石卿,译.北京：国防工业出版社，1986.

Pauli Sowa. Metallography of Titanium Alloy [M]. Translated by Chen S Q. Beijing: National Defense Industry Press, 1986.

[10]韩言, 赵飞,万明攀,等.TC17钛合金热流变行为及组织演变机制研究[J].稀有金属,2020,40(3):234-241.

Han Y, Zhao F, Wan M P, et al. Thermal flow behaviors and microstructure evolution of TC17 alloy[J]. Chinese Journal of Rare Metals, 2020,40(3):234-241.

[11] 王永哲, 张鹏,田琳.热处理制度对TC4小棒材组织和性能的影响[J].中国有色金学报,2010,20(1):638-620.

Wang Y Z, Zhang P,Tian L.Effect of heat treatment on mierostructure and performance of TC4 bars[J]. Chinese Journal of Rare Metals,2010,20(1)：638-640.

[12] 王海, 魏芬绒,邓家彬,等.影响钛合金屈强比的因素及作用机理探讨[J].热加工工艺,2016,45(22):109-111,115.

Wang H, Wei F R, Deng J B, et al. Effect factors for yield ratio of titanium alloy and discussion of function mechanism[J].Hot Working Technology,2016,45(22):109-111,115.

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