2022 年 8 月
第 43 卷 第 8 期
推 进 技 术
JOURNA L O F PRO PU L S ION TECHNO LOGY
Aug. 2022
Vol.43 No.8
200967-1
复杂钛合金进气道热等静压近净成形技术研究 *
张海洋,史金靓,张绪虎,阴中炜,邓太庆,许秀芝
(航天材料及工艺研究所,北京 100076)
摘 要:冲压发动机进气道是一种复杂异形薄壁钛合金构件,成形难度非常大。以 TA15 钛合金
粉末为原材料,利用热等静压近净成形技术在国内首次研制成功进气道,实现了整体结构的一次成
形,并成功通过飞行考核。从进气道本体取样,测试了不同位置的组织。结果表明:热等静压 TA15
钛合金不同位置组织均匀性好,主要以板条状或片层状 α相为主。在粉末颗粒边界大应变带周围分布
着等轴α相,相间分布少量的细小β相。测试了材料各项性能,其平均室温抗拉强度、屈服强度、伸长
率、断面收缩率、500℃抗拉强度、断裂韧性和冲击韧性分别为 995MPa,924MPa,18.2%,43%,
673MPa,90.6MPa·m1/2
和51.4J/cm2
,各项性能数据均达到了GJB2744A-2007中规定的TA15钛合金锻件
的水平,综合性能良好。
关键词:冲压发动机;进气道;钛合金;薄壁结构;成形技术;力学性能;热等静压
中图分类号:TG146.23 文献标识码:A 文章编号:1001-4055(2022)08-200967-07
DOI:10.13675/j.cnki. tjjs. 200967
Near-Net-Shaping Hot Isostatic Pressing of Complicated
Titanium Alloy Air Inlet
ZHANG Hai-yang,SHI Jin-liang,ZHANG Xu-hu,YIN Zhong-wei,DENG Tai-qing,XU Xiu-zhi
(Aerospace Research Institute of Materials and Processing Technology,Beijing 100076,China)
Abstract:The air inlet of the ramjet is a complex shaped thin-walled titanium alloy component,which is
very difficult to form. Using TA15 titanium alloy powder as the raw material,the air inlet was successfully devel⁃
oped for the first time in China by using near-net-shaping hot isostatic pressing technology. The overall struc⁃
ture was formed once,and the flight test was successfully passed. Samples were taken from the inlet body and
microstructure at different locations were observed. The results show that the microstructure of TA15 titanium
alloy is uniform at different positions,mainly lath-like or lamellar α-phase. Equivalent α-phase is distributed
around the large strain zone of powder grain boundary,and a small amount of β is distributed between phases.
The various properties of the material were tested. The average room temperature tensile strength,yield
strength,elongation,reduction of area,500℃ tensile strength,fracture toughness and impact toughness were
995MPa,924MPa,18.2%,43%,673MPa,90.6MPa·m1/2 and 51.4J/cm2
. All performance data have reached
the level of the TA15 titanium alloy forgings standard,which show excellent comprehensive performance.
Key words:Ramjet engine;Air inlet;Titanium alloy;Thin-walled structures;Forming techniques;
Mechanical performance;Hot isostatic pressing
* 收稿日期:2020-12-04;修订日期:2021-06-03。
通讯作者:张海洋,硕士,高级工程师,研究领域为热等静压钛合金近净成形技术。
引用格式:张海洋,史金靓,张绪虎,等 . 复杂钛合金进气道热等静压近净成形技术研究[J]. 推进技术,2022,43(8):
200967. (ZHANG Hai-yang,SHI Jin-liang,ZHANG Xu-hu,et al. Near-Net-Shaping Hot Isostatic Pressing of
Complicated Titanium Alloy Air Inlet[J]. Journal of Propulsion Technology,2022,43(8):200967.)