Measurement of thermal diffusivity of steels at elevated temperature by a laser flash method

Tsuyoshi Nishi, Hiroyuki Shibata, Koichi Tsutsumi, Hiromichi Ohta, Yoshio Waseda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to obtain thermal diffusivity of steels at elevated temperature with sufficient reliability using a laser flash method, an accurate value of specimen thickness is essentially required. Accordingly, a linear thermal expansion coefficient of steels was systematically measured in the temperature range from room temperature to 1676 K. Since the decrease in specimen thickness was detected after the measurement of thermal diffusivity under vacuum at high temperature close to solidus, such a factor was quantitatively estimated from the thickness values of quenched specimens. Combining these two results, the thermal diffusivity values were successfully determined for ultra low carbon, low carbon, medium carbon, 1.2% silicon, 9% nickel and 13% chromium steels in the temperature range from room temperature to 1676 K using the lassoer flash method.

Original languageEnglish
Pages (from-to)498-503
Number of pages6
JournalIsij International
Volume42
Issue number5
DOIs
Publication statusPublished - 2002 Jan 1

Keywords

  • Elevated temperature
  • Laser flash method
  • Linear thermal expansion coefficient
  • Steel
  • Thermal diffusivity
  • Thickness of specimen

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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