| Relationship among forging technology, structure and properties of TC21 alloy bars |
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| 作者姓名： | 曲恒磊 周义刚 周廉 赵永庆 曾卫东 冯亮 杨延清 陈军 俞汉清 李辉 张颖楠 郭红超 |
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| 作者单位： | [1]School of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China [2]Titanium Research Centre, Northwest Institute for Nonferrous Metals Research, Xi＇an 710016, China |
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| 基金项目： | Project（C142003C001） supported by Defence Basic Annual Scientific Research Program of China |
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| 摘 要： | 1INTRODUCTIONNew alloys have been developed for variousdemands1].Advanced titanium alloy with highstrength and toughness is one of the i mportant de-velopment directions in the related area2].TC21titaniumalloy is a new(α+β)high strength andtoughness alloy that belongs to Ti-Al-Sn-Zr-Mo-Cr-Nb-Si system.This alloy was patented inChina3],and quite promising for the structuralparts of advanced aircraft.Several papers describedits characteristics recently46].Though forgingtechniques…
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| 关 键 词： | 钛合金 微观结构 机械性能 强度 刚性 |
| 文章编号： | 1003-6326（2005）05-1120-05 |
| 收稿时间： | 2004-08-31 |
| 修稿时间： | 2005-04-21 |
Relationship among forging technology, structure and properties of TC21 alloy bars |
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| QU Heng-lei,ZHOU Yi-gang,ZHOU Lian,ZHAO Yong-qing,ZENG Wei-dong,FENG Liang,YANG Yan-qing,CHEN Jun,YU Han-qing,LI Hui,ZHANG Ying-nan,GUO Hong-chao.Relationship among forging technology, structure and properties of TC21 alloy bars[J].Transactions of Nonferrous Metals Society of China,2005,15(5):1120-1124. |
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| Authors: | QU Heng-lei ZHOU Yi-gang ZHOU Lian ZHAO Yong-qing ZENG Wei-dong FENG Liang YANG Yan-qing CHEN Jun YU Han-qing LI Hui ZHANG Ying-nan GUO Hong-chao |
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| Abstract: | As candidate of structural material for advanced domestic aircraft, a new high strength and toughness titanium alloy TC21 was studied focusing on forging technology and microstructure as well as mechanical properties.Two specification ingots and bars were adopted. The results show that basket-weave microstructure is obtained in bars produced by beta finish-forging method; while duplex or tri-modal microstructure appears in bars manufactured by near-beta forging technology. Essential reason affecting structure characteristics is the difference in forging tem perature and deformation amount. Variation in lamellar spacing results in fluctuation of properties corresponding to basket-weave microstructure; however, ideal matching of properties can be reached by near-beta forging. |
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| Keywords: | titanium alloy bars beta forging near-beta forging microstructure mechanical property |
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