航天推进技术研究院主办
[1]付伟,陈斌,宋晓国,等.保温时间对BNi-2非晶钎料钎焊1Cr18Ni9Ti不锈钢接头组织和性能的影响[J].火箭推进,2024,50(01):147-153.[doi:10.3969/j.issn.1672-9374.2024.01.014]
FU Wei,CHEN Bin,SONG Xiaoguo,et al.Effect of holding time on microstructure and mechanical properties of 1Cr18Ni9Ti stainless steel joint brazed by amorphous BNi-2 filler metal[J].Journal of Rocket Propulsion,2024,50(01):147-153.[doi:10.3969/j.issn.1672-9374.2024.01.014]
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FU Wei,CHEN Bin,SONG Xiaoguo,et al.Effect of holding time on microstructure and mechanical properties of 1Cr18Ni9Ti stainless steel joint brazed by amorphous BNi-2 filler metal[J].Journal of Rocket Propulsion,2024,50(01):147-153.[doi:10.3969/j.issn.1672-9374.2024.01.014]
保温时间对BNi-2非晶钎料钎焊1Cr18Ni9Ti不锈钢接头组织和性能的影响
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
50
期数:
2024年01期
页码:
147-153
栏目:
目次
出版日期:
2024-02-28
- Title:
- Effect of holding time on microstructure and mechanical properties of 1Cr18Ni9Ti stainless steel joint brazed by amorphous BNi-2 filler metal
- 文章编号:
- 1672-9374(2024)01-0147-07
- 分类号:
- TG454
- 文献标志码:
- A
- 摘要:
- 对不同保温时间下1Cr18Ni9Ti不锈钢/非晶BNi-2/1Cr18Ni9Ti不锈钢钎焊接头的界面组织演变及力学性能进行探究,为制造高可靠接头提供理论支持。采用BNi-2非晶钎料箔片,在1 000 ℃不同保温时间下进行1Cr18Ni9Ti不锈钢的真空钎焊,通过SEM和EDS等表征手段分析了接头中钎料与母材之间的作用机理,对接头的抗剪强度进行评价并分析其断裂机理,探究不同保温时间下钎焊接头界面组织演化和力学性能变化规律。钎缝的主要成分为Ni(s,s)+CrB。随保温时间的增加,钎缝宽度不断减小,CrB的晶间渗入程度加剧,接头的抗剪强度先升后降,保温时间为10 min时获得最大值248 MPa。保温时间较短时,焊缝中存在的大块CrB相为裂纹源,呈脆性断裂; 延长保温时间,大块CrB变得细小,断裂位置变为扩散区,呈韧性断裂,强度提高; 当时间进一步延长,大量CrB渗入母材,母材成为薄弱区,断裂于晶间渗入区,呈脆性断裂。BNi-2非晶钎料可实现1Cr18Ni9Ti不锈钢的真空钎焊,通过改变保温时间可以调控钎料中B元素的过渡行为,进而调控焊缝组织,从而获得最佳性能接头。
- Abstract:
- This investigation explored how the interfacial microstructure and mechanical characteristic of 1Cr18Ni9Ti stainless steel/amorphous BNi-2 filler/1Cr18Ni9Ti brazed joints were affected by heat preservation time, providing theoretical support for manufacturing reliable brazed joints. Amorphous BNi-2 filler metal was used to braze 1Cr18Ni9Ti stainless steel at 1 000 ℃ for various holding time. The interaction mechanism between the filler metal and the base metal were characterized by SEM and EDS. Furthermore, testing was conducted to evaluate the shear strength of the joints and to analyze their fracture mechanism. The investigation focused on the evolution of interfacial structures and the mechanical properties of brazed joints under varying holding time. The main components of the brazing seam are mainly Ni(s,s)and CrB. With the increase of heat preservation time, the width of the brazing seams decreases and the intergranular infiltration of CrB increases. The shear strength of the joints exhibits an initial increase followed by a decrease as the holding time increases. At a holding time of 10 minutes, the shear strength of the brazed joints peaks at 248 MPa. When the holding period is short, large blocky CrB particles are distributed in the center of the brazed seam, which is the source of cracks exhibiting brittle fracture. As the holding time becomes longer, the large CrB blocks become smaller and the fracture location becomes a diffusion zone, exhibiting ductile fracture and increased strength. When the holding period is further prolonged, massive CrB permeates into the steel along the grain boundary, causing it to become a weak zone and fracture in the intergranular infiltration zone, resulting in brittle fracture. Amorphous BNi-2 filler is suitable to braze 1Cr18Ni9Ti stainless steel. By changing the holding time, the transition behavior of element B in the filler can be controlled, thereby regulating the weld microstructure and obtaining the best performance joint.
参考文献/References:
[1] 张丽霞,孟德强,郑文龙,等.5005铝合金与1Cr18Ni9Ti的真空钎焊分析[J].焊接学报, 2017,38(1): 107-111.
ZHANG L X, MENG D Q, ZHENG W L, et al. Vacuum brazing 5005 aluminum alloy to 1Cr18Ni9Ti stainless steel[J]. Transactions of the China Welding Institution, 2017, 38(1): 107-111.
[2]周亚雄,吴晓明,杨欢庆,等.航天高强不锈钢LMD成形缺陷分析及控制[J]. 火箭推进,2022,48(1): 90-96.
ZHOU Y X, WU X M, YANG H Q, et al. Defect analysis and control in aerospace high strength stainless steel by laser melting deposition[J]. Journal of Rocket Propulsion, 2022, 48(1): 90-96.
[3]CHEN L, CHEN H Z, YANG W P, et al. Interfacial microstructure and mechanical properties of 1Cr18Ni9Ti/1Cr21Ni5Ti stainless steel joints brazed with Mn-based brazing filler[J]. Materials, 2022, 15(19): 7021.
[4]徐登伟,朱建国,罗大亮,等.减压阀球头磨损故障分析及改进[J].火箭推进,2022,48(4): 81-87.
XU D W, ZHU J G, LUO D L, et al. Failure analysis and improvement of the ball-end wear for pressure reducing valve[J]. Journal of Rocket Propulsion, 2022, 48(4): 81-87.
[5]周帅,林磊,杜大华,等.液体火箭发动机对接焊管道振动疲劳性能研究[J].火箭推进,2021,47(3): 90-97.
ZHOU S, LIN L, DU D H, et al. Study on vibration fatigue of butt welded pipe of liquid rocket engine[J]. Journal of Rocket Propulsion, 2021, 47(3): 90-97.
[6]宋凡,周杰,徐晓丹,等.轨控发动机不锈钢喷注器扩散钎焊工艺[J]. 火箭推进,2021,47(1): 90-96.
SONG F, ZHOU J, XU X D, et al. Process of TLP welding of stainless steel injector in orbit-control engine[J]. Journal of Rocket Propulsion, 2021, 47(1): 90-96.
[7]LEE Y, KIM J H. Brazing property of SUS304 stainless steel and BNi-2 filler metal with vacuum brazing: Fundamental study on brazeability with Ni-based filler metal(I)[J]. Korean Journal of Materials Research, 2007, 17(3): 142-146.
[8]OU C L, LIAW D W, DU Y C, et al. Brazing of 422 stainless steel using the AWS classification BNi-2 Braze alloy[J]. Journal of Materials Science, 2006, 41(19): 6353-6361.
[9]ZOU J T, LI S L, WEI Y N, et al. Research of the bonded interface of Cu9Al4Fe/1Cr18Ni9Ti stainless steel bimetallic composite[J]. Vacuum, 2017, 146: 266-273.
[10]NIYARAKI M N, NOURI M D. Investigation of microstructure and mechanical behavior of AISI 420/BNi-2 brazed joints under impact loading at high strain rates with the split Hopkinson bar[J]. Welding in the World, 2022, 66(10): 1957-1973.
[11]ABDOLVAND R, ATAPOUR M, SHAMANIAN M. Effects of cooling regimes on the microstructural and mechanical properties of the transient liquid phase joints of UNS S32750 super duplex stainless steel/BNi-2/AISI 304 stainless steel[J]. Journal of Materials Science, 2022, 57(6): 4383-4398.
[12]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): 184-188.
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 Harbin Institute of Technology, 2016, 48(5): 184-188.
[13]徐创,杨峰,宋阳,等.钎焊温度对304不锈钢焊缝组织和性能影响[J].热加工工艺,2016,45(1): 238-240.
XU C, YANG F, SONG Y, et al. Effects of brazing temperature on microstructure and properties of brazed joints of 304 stainless steel[J]. Hot Working Technology, 2016, 45(1): 238-240.
[14]胡胜鹏,李文强,付伟,等.BNi-2非晶钎料钎焊高铌TiAl合金与GH3536合金接头组织与性能[J].航空学报,2021,42(3): 423846.
HU S P, LI W Q, FU W, et al. Interfacial microstructure and mechanical properties of high Nb containing TiAl alloy and GH3536 superalloy brazed using amorphous BNi-2 filler[J]. Acta Aeronautica et Astronautica Sinica, 2021, 42(3): 423846.
[15]LUGSCHEIDER E. High temperature brazing of stainless steel with nickel-base filler metals BNi-2, BNi-5 and BNi-7 best results in type 316 stainless steel butt joints are obtained when brazing with BNi-2 and BNi-5 filler metals is followed by heat treatment[EB/OL].[2003-05-19]. https://www.semanticscholar.org/paper/High-Temperature-Brazing-of-Stainless-Steel-with-in-Lugscheider/c06e329153 5cc45abfd627568589380ecf5ff1e3.
[16]SONG Y Y, LIU D, LI X Y, et al. Microstructure and mechanical properties of Cf/SiC composite/GH99 joints brazed with BNi2-Ti composite filler[J]. Journal of Manufacturing Processes, 2020, 58: 905-913.
[17]LEI Y, SUN J, HU S P, et al. Investigation on the microstructure and mechanical properties of CoCrFeNi high-entropy alloy joint bonded with BNi2 interlayer[J]. Journal of Materials Processing Technology, 2021, 294: 117144.
[18]MIN M, MAO Y W, DENG Q R, et al. Vacuum brazing of Mo to 316L stainless steel using BNi-2 paste and Cu interlayer[J]. Vacuum, 2020, 175: 109282.
[19]李云月,栗卓新,李红,等.耐腐蚀性镍基箔带钎料钎焊不锈钢接头性能[J].焊接学报,2019,40(9): 30-38.
LI Y Y, LI Z X, LI H, et al. Properties of stainless steel joints brazed with corrosion-resistant nickel-based foil and filler[J]. Transactions of the China Welding Institution, 2019, 40(9): 30-38.
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备注/Memo
收稿日期:2023- 10- 16 修回日期:2023- 11- 16
基金项目:国家自然科学基金(52105330,52175307); 山东省“泰山学者”基金(tsqn201812128)
作者简介:付伟(1989—),男,博士,副教授,研究领域为新材料及异种材料连接。
更新日期/Last Update:
1900-01-01