304不锈钢消音蜂窝钎焊工艺、组织及力学性能分析

doi:10.11896/j.issn.1005-023X.2018.14.018

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Abstract 304 stainless-steel soundproof honeycomb panel was brazed using BNi2 brazing filler metal. Microstructure and mechanical properties of present honeycomb panel as well as the effect of multiple brazing processes on the microstructure and mechanical properties were investigated. It was found that BNi2 brazing filler metal spread and solidficates on the surface of honeycomb core foils due to the capillarity effect. Notable atom diffusion was taken place between BNi2 brazing filler metal and honeycomb core foils. Brazing seam between face sheet and honeycomb core was consisted of Ni based solid solution structure with Cr, Si, etc, and no brittle intermetallic compounds. B and Si was migrated into face sheet which promoted the formation of reaction region between BNi2 brazing filler metal and face sheet, with grain boundary penetration characteristic due to the fast grain boundary diffusion behavior of B. With the increase of brazing thermal cycle times, the dissolution of brazing filler metal to honeycomb core foils and face sheets was improved and the grain boundary diffusion of brazing filler metal/face sheet zone was gradually intensive due to the increase of accumulated holding time at high temperature by multiple vacuum brazing. Tensile strength of present 304 stainless-steel soundproof honeycomb panel was 7.21 MPa, and all the tensile specimens were fractured at honey core region near face sheet. With the increase of brazing thermal cycle times, the tensile strength decreased. The flat compression strength, edgewise compression strength and bending strength of present 304 stainless-steel soundproof honeycomb panel were 5.67 MPa,33.85 MPa and 105.87 MPa respectively. Specimens of flat compression testing and bending testing encountered elastic deformation, plastic deformation and plastic instability during testing, while specimens of edgewise compression testing experienced plastic instability of honey core and peeling between perforated face sheet and honey core during testing. Considering the adverse effect of multiple brazing processes on the microstructure and mechanical properties of 304 stainless steel honeycomb panel, one repairing brazing was suggested for the subsequent repairing process of 304 stainless steel honeycomb panel.

Key words： 304 stainless-steel soundproof honeycomb panel brazing interface microstructure mechanical properties

Published: 31 July 2018

CLC number:

TG44

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	Articles by authors
	DENG Yunhua
	YUE Xishan
	GUAN Zhichao

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DENG Yunhua,YUE Xishan,GUAN Zhichao. Study on the Brazing Process, Microstructure and Mechanical Properties of 304 Stainless-steel Soundproof Honeycomb Core Sandwich Panels[J]. Materials Reports, 2018, 32(14): 2425-2430.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.14.018 OR http://www.mater-rep.com/EN/Y2018/V32/I14/2425

1 Huo L Z. Study on the structure and acoustic characteristics of anechoic honeycomb sandwich structure[J]. Civil Aircraft Design & Research,2000(4):42(in Chinese).
霍麟祯.消声蜂窝夹层结构元件的结构形式及其声学特性的研究分析[J].民用飞机设计与研究,2000(4):42.
2 United Technologies Corporation. High admittance acoustic liner: US,7337875[P]. 2008-03-04.
3 Wilson R S. Noise attenuation panel: US,6609592B2[P]. 2003-08-26.
4 Peng S. Progress in noise reduction technology of large civil aircraft nacelle[J]. Science & Technology Information,2011(24):751(in Chinese).
彭森.大型民用客机短舱降噪技术进展[J].科技信息,2011(24):751.
5 Huang W C. Application of acoustically treated honeycomb sandwich panels in noise control of aircraft cabin[J]. Acta Aeronautica and Astronautica Sinica,1990,11(11):584(in Chinese).
黄文超.声处理蜂窝夹层结构在飞机座舱降噪设计中的应用[J].航空学报,1990,11(11):584.
6 Petitjean B, Legran I, Simon F, et al. Active control experimental for acoustic radiation reduction of a sandwich panel: Feedback and feedforward investigations[J]. Journal of Sound and Vibration,2002,252(1):19.
7 Li C L, Wang T Q, Lai S L, et al. Experimental study on the acoustic property of bonding honeycomb nacelle model in compressor inlet[J]. Journal of Aerospace Power,2002,17(1):45(in Chinese).
李春林,王同庆,赖士洪,等.风扇进气道胶接蜂窝声衬样件声学性能实验研究[J].航空动力学报,2002,17(1):45.
8 Elangovan R, Olsen R F, Reynolds N D. Modeling of acoustically treated nacelle lip transpiration flow anti-icing system[C]∥ The 26th International Congress of the Aeronautical Sciences.Ancho-rage, Alaska,2008.
9 Drevon E. Measurement methods and devices applied to A380 nacelle double degree-of-freedom acoustic liner development[C]∥ The 10th AIAA/CEAS Aerocaustics . Manchester,2004.
10 Blair W. Method of manufacture of honeycomb noise attenuation structure for high temperature applications: US,4522859[P]. 1985-06-11.
11 Lord W K, Suciu G L. Acoustic liner heat exchanger: US,20160017810[P]. 2016-01-27.
12 Swindlehurst C E, Plunkett R B, Lennon J F. Acoustic liner and method of making an acoustic liner: US,4522859[P]. 2001.
13 中国机械工程学会焊接学会. 焊接手册第1卷[M]. 第2版. 北京:机械工业出版社,2001.
14 Yang M X, Jia Z D, Lin X C, et al. Vacuum brazing 0Cr18Ni9 stainless steel pipe to itself with BNi-2 filler alloy[J]. Journal of Haerbin Institute of Technology,2016,48(5):184(in Chinese).
杨敏旋,贾振东,蔺晓超,等.采用BNi-2钎料真空钎焊0Cr18Ni9不锈钢管材[J].哈尔滨工业大学学报,2016,48(5):184.
15 Arafin M A, Medraj M, Turner D P, et al. Transient liquid phase bonding of Inconel 718 and Inconel 625 with BNi-2: Modeling and experimental investigations[J]. Materials Science and Engineering A,2007,447:125.
16 Yu Z S, Shi K, Yan Z, et al. Effect of brazing clearance on the vacuum brazed joint microstructure of 316L stainless steel[J]. Journal of Materials Engineering,2010(10):77(in Chinese).
于治水,石昆,言智,等.钎缝间隙对316L不锈钢真空钎焊接头组织的影响[J].材料工程,2010(10):77.