Effect of post-weld heat treatment and neutron irradiation on a dissimilar-metal joint between F82H steel and 316L stainless steel

Haiying Fu, Takuya Nagasaka, Nobuyuki Kometani, Takeo Muroga, Wenhai Guan, Shuhei Nogami, Kiyohiro Yabuuchi, Takuya Iwata, Akira Hasegawa, Masanori Yamazaki, Sho Kano, Yuhki Satoh, Hiroaki Abe, Hiroyasu Tanigawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

A dissimilar-metal joint between F82H steel and 316L stainless steel was fabricated by using electron beam welding (EBW). By microstructural analysis and hardness test, the heat-affected zone (HAZ) of F82H was classified into interlayer area, fine-grain area, and coarse-carbide area. Post-weld heat treatment (PWHT) was applied to control the hardness of HAZ. After PWHT at 680 °C for 1 h, neutron irradiation at 300 °C with a dose of 0.1 dpa was carried out for the joint in Belgian Reactor II (BR-II). Compared to the base metals (BMs) and weld metal (WM), significant irradiation hardening up to 450HV was found in the fine-grain HAZ of F82H. However, the impact property of F82H-HAZ specimens, which was machined with the root of the V-notch at HAZ of F82H, was not deteriorated obviously in spite of the significant irradiation hardening.

Original languageEnglish
Pages (from-to)1968-1972
Number of pages5
JournalFusion Engineering and Design
Volume98-99
DOIs
Publication statusPublished - 2015 Oct 1

Keywords

  • 316L stainless steel
  • Electron beam welding
  • F82H steel
  • Neutron irradiation
  • Post-weld heat treatment

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Effect of post-weld heat treatment and neutron irradiation on a dissimilar-metal joint between F82H steel and 316L stainless steel'. Together they form a unique fingerprint.

Cite this