45钢特厚复合坯真空电子束焊接头裂纹倾向分析
Analysis of Crack Tendency in Vacuum Electron Beam Welding Joints of 45 Steel Ultra-thick Composite Billets
- 2024年54卷第2期 页码:64-69
DOI: 10.7512/j.issn.1001-2303.2024.02.10
扫 描 看 全 文
扫 描 看 全 文
蒋健博,厉文墨,刘芳芳,等.45钢特厚复合坯真空电子束焊接头裂纹倾向分析[J].电焊机,2024,54(2):64-69.
JIANG Jianbo, LI Wenmo, LIU Fangfang, et al.Analysis of Crack Tendency in Vacuum Electron Beam Welding Joints of 45 Steel Ultra-thick Composite Billets[J].Electric Welding Machine, 2024, 54(2): 64-69.
采用真空电子束焊接方法封焊并制备45钢特厚复合坯,通过金相显微镜(OM)、扫描电子显微镜(SEM)、维氏硬度计、冲击试验机等设备,分别分析了45钢复合坯封焊过程中不同位置(1#起弧处、2#中部、3#收弧处)接头组织与力学性能。结果表明,焊接位置由起弧处向收弧处变化时,接头熔深几乎不变,热影响区域面积逐渐减小。1#接头焊后冷却速度相对较慢,焊缝根部无裂纹产生,组织为针状马氏体与团块状托氏体混合物,硬度为588 HV,焊缝根部冲击性能为25.7 J,断口呈韧性断裂;2#及3#试样焊后冷却速度快,焊缝根部产生明显的穿晶裂纹,组织均为针状马氏体,随着焊后冷却速度的加快,马氏体数量增多尺寸变细;硬度分别升高至674 HV与729 HV,冲击性能下降,分别为18 J与13.7 J,并呈脆性断裂。
The 45 steel composite billet was sealed and fabricated by vacuum electron beam welding method. The microstructure and mechanical properties of the electron beam joint at different positions (1# arc
2# middle and 3# arc closure) were analyzed by means of metallography microscope (OM)
scanning electron microscope (SEM)
Vickers hardness tester and impact testing machine. The results show that: When the welding position changes from the arc starting point to the arc retracting point
the joint penetration depth is almost constant
and the heat affected area decreases gradually. After welding
the cooling rate of the 1# joint is relatively slow
no crack occurs at the root of the weld
the structure is a mixture of acicular martensite and clumpy trotensite
the hardness (HV) is 588
the impact energy of the weld root is 25.7J
and the fracture is ductile. After welding
the cooling rate of the 2# and 3# samples is high
and obvious transgranular cracks appear at the root of the weld
and the microstructure is acicular martensite. With the acceleration of the cooling rate after welding
the number of martensite increases and the size becomes finer. The hardness (HV) increased to 674 and 729
respectively
and the impact property decreased to 18J and 13.7J
respectively
and showed a brittle fracture.
45钢复合坯真空电子束焊接接头组织硬度裂纹
45 steel composite billetelectron beam weldingjoint organizationhardnesscrack
李焰锋, 刘杰. 特厚不锈钢复合板压力容器制造技术[J]. 大型铸锻件, 2018(04): 49-51.
LI Y F, LIU J. Manufacturing Technology of Extra Thick Stainless Steel Composite Plate Pressure Vessels [J]. Large castings and forgings, 2018(04): 49-51.
李丽,陈亚魁,吴君明,等. 海洋平台用特厚板大线能量焊接接头力学性能研究[J]. 电焊机,2018,48(11):27- 30,35.
LI L,CHEN Y K,WU J M, et al. Microstructure and Mechanical Properties of Multi layer Composite Carbon Steel High Performance Extra Thick Plate[J]. Electric Welding Machine,2018,48(11):27-30,35.
Yang W X, Xin J J, Fang C, et al. Microstructure and mechanical properties of ultra-narrow gap laser weld joint of 100mm-thick SUS304 steel plates[J]. Journal of Materials Processing Technology,2019,265:130-137.
康永林,朱国明,姜敏,等.板坯连铸大辊径大压下及低压缩比轧制特厚板[J].钢铁,2022,57(07):95-105.
KANG Yo L, ZHU G M, JIANG M, et al. Large roll diameter, large reduction, and low compression ratio rolling of ultra-thick plates for slab continuous casting [J]. Steel, 2022, 57(07): 95-105.
李广龙,赵坦,原思宇,等. SM45钢300~410 mm特厚复合板的组织和性能[J].特殊钢,2016,37(03):67-70.
LI G L, ZHAO T, YUAN S Y, et al. Microstructure and Properties of SM45 Steel 300-410 mm Extra Thick Composite Plate[J].Special steel,2016,37(03):67-70.
杨阳. 真空制坯热轧复合法制备45钢、E690钢特厚复合板的工艺研究[D]. 辽宁:东北大学, 2014.
YANG Y. Research on the Process of Preparing 45 Steel and E690 Steel Extra Thick Composite Plates by Vacuum Billet Hot Rolling Composite Method[D]. Liaoning: Northeastern University, 2014.
Wang G L, Luo Z A, Xie G M, et al. Experiment Research on Impact of Total Rolling Reduction Ratio on the Properties of Vacuum Rolling-Bonding Ultra-Thick Steel Plate[J]. Advanced Materials Research, 2011, 299-300: 962-965.
陈浩, 张晓, 朱瑞芳. Q355钢焊接性及其与Q345钢焊接技术的关键比较[J]. 电焊机, 2022, 52(2): 109-113.
CHEN H, ZHANG X, ZHU R F. Weldability of Q355 Steel and Key Comparison of Welding Technology between It and Q345 Steel[J]. Electric Welding Machine,2022,52(2):109-113.
王恒霖. FeCrAl合金管材及板材焊接性研究[D]. 甘肃:兰州理工大学, 2022.
WANG H L. Research on the Weldability of FeCrAl Alloy Pipe and Plate[D]. Gansu: Lanzhou University of Technology, 2022.
史小猛,姜德成,宋子跃,等. 12Cr1MoVG合金钢管道焊接接头性能分析及质量控制[J]. 焊接技术, 2023, 52(02): 96-99.
SHI X M,JIANG D C,SONG Z Y, et al. Performance Analysis and Quality Control of 12Cr1MoVG Alloy Steel Pipe Welding Joint[J].Welding Technology,2023,52(02):96-99.
张颖云,胡生双,朱增辉,等. 30CrMnSiNi2A钢电子束焊接头的疲劳裂纹扩展特性研究[J]. 航空制造技术, 2022, 65(08): 113-118.
ZHANG Y Y, HU S S, ZHU Z H, et al. Study on fatigue crack propagation characteristics of electron beam welded joints of 30CrMnSiNi2A steel[J]. Aerospace Manufacturing Technology, 2022, 65(08): 113-118.
刘志卫,李杨,臧振东,等. 热轧HP295带钢中魏氏体组织成因及控制[J]. 河北冶金, 2021(10): 76-79.
LIU Z W, LI Y, ZANG Z D, et al.Formation and Control of Weinsteinite Structure in Hot Rolled HP295 Strip Steel[J]. Hebei Metallurgy, 2021(10): 76-79.
张振华, 杨贤彪, 杨庆旭. 新型耐热钢焊接接头冷裂纹分析与控制措施探讨[J]. 焊接技术,2022,51(S1):29-34.
ZHANG Z H, YANG X B, YANG Q X. Analysis and control measures for cold cracks in welded joints of new heat-resistant steel[J].Welding Technology,2022,51(S1):29-34.
杨立国, 邢永明. Q420C钢材焊缝连接冲击韧性试验[J]. 中国科技论文, 2021, 16(10): 1074-1079.
YANG L G, XING Y M. Q420C Steel Weld Joint Impact Toughness Test[J]. Chinese Science and Technology Paper, 2021, 16(10): 1074-1079.
编辑部网址:http://www.71dhj.comhttp://www.71dhj.com
相关作者
相关机构