2022 年 8 月
第 43 卷 第 8 期
推 進(jìn) 技 術(shù)
JOURNA L O F PRO PU L S ION TECHNO LOGY
Aug. 2022
Vol.43 No.8
200967-1
復(fù)雜鈦合金進(jìn)氣道熱等靜壓近凈成形技術(shù)研究 *
張海洋,史金靚,張緒虎,陰中煒,鄧太慶,許秀芝
(航天材料及工藝研究所,北京 100076)
摘 要:沖壓發(fā)動(dòng)機(jī)進(jìn)氣道是一種復(fù)雜異形薄壁鈦合金構(gòu)件,成形難度非常大。以 TA15 鈦合金
粉末為原材料,利用熱等靜壓近凈成形技術(shù)在國(guó)內(nèi)首次研制成功進(jìn)氣道,實(shí)現(xiàn)了整體結(jié)構(gòu)的一次成
形,并成功通過(guò)飛行考核。從進(jìn)氣道本體取樣,測(cè)試了不同位置的組織。結(jié)果表明:熱等靜壓 TA15
鈦合金不同位置組織均勻性好,主要以板條狀或片層狀 α相為主。在粉末顆粒邊界大應(yīng)變帶周?chē)植?/p>
著等軸α相,相間分布少量的細(xì)小β相。測(cè)試了材料各項(xiàng)性能,其平均室溫抗拉強(qiáng)度、屈服強(qiáng)度、伸長(zhǎng)
率、斷面收縮率、500℃抗拉強(qiáng)度、斷裂韌性和沖擊韌性分別為 995MPa,924MPa,18.2%,43%,
673MPa,90.6MPa·m1/2
和51.4J/cm2
,各項(xiàng)性能數(shù)據(jù)均達(dá)到了GJB2744A-2007中規(guī)定的TA15鈦合金鍛件
的水平,綜合性能良好。
關(guān)鍵詞:沖壓發(fā)動(dòng)機(jī);進(jìn)氣道;鈦合金;薄壁結(jié)構(gòu);成形技術(shù);力學(xué)性能;熱等靜壓
中圖分類(lèi)號(hào):TG146.23 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):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;修訂日期:2021-06-03。
通訊作者:張海洋,碩士,高級(jí)工程師,研究領(lǐng)域?yàn)闊岬褥o壓鈦合金近凈成形技術(shù)。
引用格式:張海洋,史金靚,張緒虎,等 . 復(fù)雜鈦合金進(jìn)氣道熱等靜壓近凈成形技術(shù)研究[J]. 推進(jìn)技術(shù),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.)