ULCB钢电子束穿透焊组织与性能

惠媛媛; 张敏; 庄明祥; 李杰; 樊浩

doi:10.12073/j.hjxb.2019400216

ULCB钢电子束穿透焊组织与性能

1.
西安航空职业技术学院, 西安 710089
2.
西安理工大学, 西安 710089
3.
航空工业西安飞机工业(集团)有限责任公司, 西安 710089

基金项目: 国家高技术研究发展计划资助项目（863计划，2002AA305402）；陕西高校青年创新团队（2019-73）；西安航空职业技术学院2017年度科研计划项目（基于焊接机器人的焊接工艺研究：17XHZH-001）

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- 收稿日期: 2018-02-24

Study of microstructure and property in electron beam welded ULCB steel joints

1.
Xi'an Aeronautical Polytechnic Institute, Xi'an 710089, China
2.
Xi'an University of Technology, Xi'an 710089, China
3.
AVIC Xi'an Aircraft Industry(Group) Company LTD, Xi'an 710089, China

摘要

摘要: 为了进一步探索ULCB钢的焊接性能，采用真空电子束穿透焊不同束流强度对14 mm钢板对接接头进行了焊接，通过焊缝形貌比较，束流强度为100 mA时，接头焊缝成形最好，选取该接头做了拉伸、硬度、冲击试验及金相组织分析.结果表明，拉伸试样的断裂区域在母材区，抗拉强度为761 MPa、屈服强度为669 MPa，硬度范围在270~330 HV；冲击试样的断裂区域在热影响区，焊缝区平均冲击功为288 J，热影响区平均冲击功为273 J；接头显微组织中，焊缝区和热影响区产生了α'马氏体相，使焊缝区和热影响区产生相变强化，导致焊接接头的强度和硬度均高于母材.
- ULCB钢 /
- 电子束穿透焊 /
- 力学性能 /
- 显微组织
Abstract: In order to further explore the weld properties of ULCB steel, butt joints of 14 mm steel were welded by vacuum electron beam penetration welding under different beam intensity parameters. By comparing the weld profile, it was found that the best weld joint shape was formed at a beam intensity of 100 mA. Meanwhile, tensile properties, hardness, impact test and microstructure were conducted on the joint at a beam intensity of 100 mA. The results shown that the fracture zone of the tensile specimens was in the base metal zone, the tensile strength was 761 MPa, the yield strength was 669 MPa, and the hardness was range 270~330 HV. The fracture area of impact specimen was in heat affected zone, the average impact energy in weld zone was 288 J, and the average impact energy in heat affected zone was 273 J. It is shown that α' martensite phase occurs in the weld zone and heat affected zone, which resulted in phase transformation strengthening in weld zone and heat affected zone. The strength and hardness of welded joints were higher than those of base metal.
- ULCB steel /
- electron beam penetration welding /
- mechanical properties /
- microstructures

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参考文献(11)

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文章访问数: 534
HTML全文浏览量: 7
PDF下载量: 65
被引次数: 4

ULCB钢电子束穿透焊组织与性能

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出版历程

Study of microstructure and property in electron beam welded ULCB steel joints

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其他类型引用(1)

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出版历程

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