[1]王哲,刘程程,李海宾.TC21钛合金网篮组织特征对力学性能的影响研究[J].中国材料进展,2023,42(08):657-661.[doi:10.7502/j.issn.1674-3962.202106024]
　WANG Zhe,LIU Chengcheng,LI Haibin.Influence of Basket Microstructure Characteristics on Mechanical Properties of TC21 Titanium Alloy[J].MATERIALS CHINA,2023,42(08):657-661.[doi:10.7502/j.issn.1674-3962.202106024]
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TC21钛合金网篮组织特征对力学性能的影响研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
42
期数:
2023年第08期
页码:
657-661
栏目:
出版日期:
2023-08-31

文章信息/Info

Title:
Influence of Basket Microstructure Characteristics on Mechanical Properties of TC21 Titanium Alloy
文章编号:
1674-3962(2023)08-0657-05
作者:
王哲1; 刘程程2; 李海宾3
1.陕西宏远航空锻造有限责任公司，陕西 咸阳 713801 2.北京星航机电装备有限公司，北京 100074 3.中航天地激光科技有限公司，北京 102209
Author(s):
WANG Zhe1;  LIU Chengcheng2;  LI Haibin3
1.Shaanxi Hongyuan Aviation Forging Co., Ltd., Xianyang 713801, China 2.Beijing Xinghang Electro-Mechanical Equipment Co.,Ltd., Beijing 100074, China 3.AVIC Tiandi Laser Technology Company Co.,Ltd., Beijing 102209, China
关键词:
TC21钛合金; 网篮组织; β相区锻造; 片层α相; 晶界α相
Keywords:
TC21 titanium alloy;  basket microstructure;  β region forging;  lamellar α phase; grain boundary α phase
分类号:
TG146.23
DOI:
10.7502/j.issn.1674-3962.202106024
文献标志码:
A
摘要:
TC21钛合金是我国自主研发的一种高强高韧损伤容限型钛合金，分别采用准β锻造、准β锻造+(α+β)锻造以及β锻造工艺对TC21钛合金进行锻造，采用金相显微镜和扫描电子显微镜研究了锻造工艺对TC21钛合金显微组织的影响规律，以及显微组织与力学性能之间的关系。结果表明：采用准β锻造(Tβ+15 ℃)后，TC21钛合金显微组织特征为破碎的β晶粒和编织程度较好的网篮组织，并且该组织具有良好的强度塑性韧性匹配；采用准β锻造后再进行(α+β)相区小变形，显微组织中部分片层α相呈短棒状分布，且网篮编织程度较差，强度与塑性与准β锻造后相当，但断裂韧性较差；在较高温度(Tβ+25 ℃)进行锻造，TC21钛合金显微组织中形成粗大平直的晶界α相，材料的强度、塑性和韧性均较低。
Abstract:
TC21 titanium alloy is a kind of titanium alloy with high strength and high toughness damage tolerance developed independently in China. In this paper, quasi-β forging, quasi-β forging +(α+β) forging and β forging process were used to forge TC21 titanium alloy. The influence of forging process on microstructure of TC21 titanium alloy and the relationship between microstructure and mechanical properties were studied by optical microscope (OM) and scanning electron microscope (SEM). The results showed that: after quasi-β forging (Tβ+15 ℃), the microstructure of TC21 titanium alloy was characterized by broken β grains and well-woven basket structure, which had good strength-plastic-toughness matching; after small deformation of (α+β) phase region after quasi-β forging, the α phases were distributed in short rod shape, and the weave degree of the basket was poor; the strength and plastic properties of the basket are similar to those of quasi-β forging, but the fracture toughness was poor; after high temperature (Tβ+25 ℃) forging, coarse and straight grain boundary α phase was formed, the strength, plasticity and toughness of the material were low.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2021-06-28修回日期：2021-12-06 第一作者：王哲，男，1987年生，高级工程师， Email:tianchenzhe@163.com
更新日期/Last Update: 2023-07-28