|Table of Contents|

Thermal fatigue behaviors of cobalt-based alloys manufactured by laser directed energy deposition(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年04期
Page:
106-114
Research Field:
目次
Publishing date:

Info

Title:
Thermal fatigue behaviors of cobalt-based alloys manufactured by laser directed energy deposition
Author(s):
YANG Xudong1;  PAN Pan1;  JIAO Zixian1;  ZHANG Xinyu2;  LUO Yang1;  DING Jiping1
(1. Shanghai Institute of Space Propulsion, Shanghai 201112, China; 2.Shanghai Jiao Tong University, Shanghai 200240, China)
Keywords:
laser directed energy deposition;  cobalt-based alloy;  thermal fatigue;  stacking fault energy
PACS:
TG146.1
DOI:
-
Abstract:
The regeneration cooling thrust chamber is prone to thermal fatigue failure owing to cyclic thermal shock during the service process. To solve the problem, novel cobalt-based alloys were prepared by adding Al and Ni into Stellite 6 alloy through mechanical ball milling and laser directed energy deposition. The test was carried out on the self-confined thermal fatigue equipment from room temperature to 600 ℃. The evolutions of microstructures and cracks during the thermal fatigue test were systematically characterized through SEM, XRD and LSM. The results indicated that the additions of Al and Ni inhibit the formation of ε-Co in the deposited cobalt-based alloy compared with Stellite 6 alloy, meanwhile, the transformation of γ-Co to ε-Co is also restricted during the thermal fatigue test. The critical cycles of thermal fatigue crack of 3Al alloy and 3Al5Ni alloy increased by 250 and 550 cycles respectively. Moreover, the crack propagation rates of the alloys were reduced by 7.5% and 12.25%. Novelcobalt-based alloys exhibit higher stacking fault energy which could stabilize phases. It also decreases the amounts of γ/ε phase boundaries that easily occur thermal fatigue cracks, which is beneficial for improving thermal fatigue resistance.

References:

[1] 陈明亮,刘昌国,徐辉,等.远征三号上面级轨控发动机研制及在轨验证[J].火箭推进,2020,46(3):11-18.
CHEN M L,LIU C G,XU H,et al.Development and in-orbit verification of orbit-control engine in YZ-3 upper stage[J].Journal of Rocket Propulsion,2020,46(3):11-18.
[2] 张北辰.面向液体火箭发动机再生冷却的微小通道相变传热过程研究[D].长沙:国防科技大学,2019.
[3] 侯瑞峰,李龙飞,陈建华,等.液体火箭发动机不同室压下冷却方案适用范围[J].航空动力学报,2022,37(12):2797-2806.
[4] 吴有亮,丁煜朔,刘潇,等.再生冷却推力室准二维传热数值计算[J].火箭推进,2023,49(2):66-73.
WU Y L,DING Y S,LIU X,et al.Quasi-2D heat transfer calculation method of regenerative cooling thrust chamber[J].Journal of Rocket Propulsion,2023,49(2):66-73.
[5] 李斌,闫松,杨宝锋.大推力液体火箭发动机结构中的力学问题[J].力学进展,2021,51(4):831-864.
[6] 钟晓康.新型多组元钴基高温合金的加工工艺及强韧化机理研究[D].合肥:中国科学技术大学,2020.
[7] WANG W,HOU Z Y,LIZÁRRAGA R,et al.An experimental and theoretical study of duplex fcc+hcp cobalt based entropic alloys[J].Acta Materialia,2019,176:11-18.
[8] YANG D Z,HUA C,QU S Z,et al.Isothermal transformation of γ-Co to -Co in stellite 6 coatings[J].Metallurgical and Materials Transactions A,2019,50(3):1153-1161.
[9] WEN J X,CAO R,CHE H Y,et al.The oxidation effect on the cracking behavior of a Co-based alloy under thermal shocks[J].Corrosion Science,2020,173:108828.
[10] WU Y,LIU Y,CHEN H,et al.Developing the ductility and thermal fatigue cracking property of laser-deposited Stellite 6 coatings by adding titanium and nickel[J].Materials & Design,2019,162:271-284.
[11] YANG X D,LI C W,ZHANG M,et al.Study on tensile and thermal fatigue behaviors of additively manufactured cobalt-based alloys alloying with Al and Ni[J].Materials Science and Engineering:A,2022,840:142914.
[12] 徐绍桐,王长辉,杨成骁.液体火箭发动机再生冷却结构弹塑性分析[J].航空动力学报,2022,37(8):1664-1673.
[13] 刘迪,孙冰,马星宇.液氧/甲烷发动机推力室多循环热-结构分析[J].推进技术,2021,42(7):1615-1627.
[14] ZHENG M Y,LI C W,ZHANG X Y,et al.The influence of columnar to equiaxed transition on deformation behavior of FeCoCrNiMn high entropy alloy fabricated by laser-based directed energy deposition[J].Additive Manufacturing,2021,37:101660.
[15] FALQUETO L E,BUTKUS D J,DE MELLO J D B,et al.Sliding wear of cobalt-based alloys used in rolling seamless tubes[J].Wear,2017,376/377:1739-1746.
[16] WU Y,LIU Y,CHEN H,et al.Microstructure evolution and crack propagation feature in thermal fatigue of laser-deposited Stellite 6 coating for brake discs[J].Surface and Coatings Technology,2019,358:98-107.
[17] ACHMAD T L,FU W X,CHEN H,et al.Computational thermodynamic and first-principles calculation of stacking fault energy on ternary Co-based alloys[J].Computational Materials Science,2018,143:112-117.
[18] CUI G J,LIU H Q,LI S,et al.Effect of Ni,W and Mo on the microstructure,phases and high-temperature sliding wear performance of CoCr matrix alloys[J].Science and Technology of Advanced Materials,2020,21(1):229-241.
[19] TANG N,LI Y P,TUNTHAWIROON P,et al.Thermo-mechanical fatigue test of a wrought Co-based alloy as potential tooling material for die casting[J].Materials Science and Engineering:A,2014,615:164-168.
[20] SU R Z,NEFFATI D,CHO J,et al.Phase transformation induced plasticity in high-strength hexagonal close packed Co with stacking faults[J].Scripta Materialia,2019,173:32-36.

Memo

Memo:
-
Last Update: 1900-01-01