Cryogenic fracture toughness and adiabatic heating of thick section weldment in forged CSUS-JN1 plate with inconel 625 type filler metals

Katsumi Horiguchi, Yasuhide Shindo, Tomoyuki Kobori, Tomotaka Takahashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In order to evaluate the cryogenic fracture toughness and the adiabatic heating of thick section weldment in forged JN1 type austenitic stainless steel plate with nickel base filler metals for fusion reactor magnets of the next generation, elastic-plastic fracture toughness (JIC) testing was performed with IT compact tension specimens at liquid helium temperature (4 K). Testing was conducted in accordance with ASTM standard E813-89 for determining JIC using the unloading compliance technique to monitor crack growth. Au/0.07%Fe-Chromel thermocouples were used to measure the temperature rise near the crack tip. The effects of specimen location and nitrogen content on J IC are examined.

Original languageEnglish
Pages (from-to)904-911
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume64
Issue number620
DOIs
Publication statusPublished - 1998

Keywords

  • Adiabatic heating
  • Austenitic stainless steel
  • Cryomechanics
  • Fracture mechanics
  • Fracture toughness
  • Magnetic fusion reactor
  • Superconducting magnet
  • Weldment

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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