不同焊接方法下燃料元件包壳用ODS钢焊接接头界面演化规律

杨灿湘; 魏连峰; 郑勇; 王宇; 董宇; 王军健; 李华鑫; 杨建国; 张鸿羽; 侯霭麟

doi:10.7512/j.issn.1001-2303.2024.05.05

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不同焊接方法下燃料元件包壳用ODS钢焊接接头界面演化规律
Interface Evolution of ODS Steel Welded Joints for Fuel Element Cladding Using Different Welding Methods
2024年54卷第5期页码：39-45
纸质出版日期： 2024-05-25 ，
DOI： 10.7512/j.issn.1001-2303.2024.05.05

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杨灿湘，魏连峰，郑勇，等.不同焊接方法下燃料元件包壳用ODS钢焊接接头界面演化规律［J］.电焊机，2024，54（5）：39-45.

YANG Canxiang, WEI Lianfeng, ZHENG Yong, et al.Interface Evolution of ODS Steel Welded Joints for Fuel Element Cladding Using Different Welding Methods[J].Electric Welding Machine, 2024, 54(5): 39-45.
杨灿湘，魏连峰，郑勇，等.不同焊接方法下燃料元件包壳用ODS钢焊接接头界面演化规律［J］.电焊机，2024，54（5）：39-45. DOI： 10.7512/j.issn.1001-2303.2024.05.05.

YANG Canxiang, WEI Lianfeng, ZHENG Yong, et al.Interface Evolution of ODS Steel Welded Joints for Fuel Element Cladding Using Different Welding Methods[J].Electric Welding Machine, 2024, 54(5): 39-45. DOI： 10.7512/j.issn.1001-2303.2024.05.05.

摘要

ODS钢具有优异的高温力学性能、抗辐照性能和抗热蠕变性能等，是最有潜力的下一代核反应堆包壳候选材料之一。ODS钢的焊接技术主要包括熔焊、钎焊、压力焊等，根据核燃料元件包壳结构，选择电子束焊接、旋转摩擦焊及脉冲电流辅助扩散焊三种焊接方法进行对比研究，并对ODS钢焊接接头微观形貌演化进行分析，揭示了最优焊接方法及界面形貌演化规律。结果表明，电子束焊接及旋转摩擦焊接工艺下，焊接接头的晶界处均有Y

析出，而采用脉冲电流辅助扩散焊无氧化物析出和团聚，对于Fe-Cr系ODS钢有突出优势。因此，脉冲电流辅助扩散焊在抑制ODS钢中纳米氧化物的析出、团聚和减少接头变形等方面具有显著优势，是一种适合ODS钢焊接的高质量焊接方法。

Abstract

ODS steel has excellent high-temperature mechanical properties

radiation resistance

and thermal creep resistance

and is one of the most potential candidate materials for the next generation nuclear reactor fuel element cladding. The welding technology of ODS steel mainly includes fusion welding

brazing

pressure welding

etc. According to the cladding structure of nuclear fuel elements

three welding methods

namely electron beam welding

rotary friction welding

and pulse current assisted diffusion welding

are selected for comparative study

and their microscopic morphology evolution is analyzed to reveal the optimal welding method and the evolution law of interface morphology. The results show that Y

precipitates at the grain boundaries of the welded joints under electron beam welding and

rotary friction welding processes

and pulse current assisted diffusion welding has no oxide precipitation and agglomeration. Pulse current assisted diffusion welding has prominent advantages for Fe-Cr ODS steels.

关键词

ODS钢核燃料元件焊接电子束焊接旋转摩擦焊接脉冲电流辅助扩散焊接

Keywords

oxide dispersion strengthened steelnuclear fuel element weldingelectron beam weldingrotary friction weldingpulsed current assisted diffusion welding

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