日本金属学会誌

J. Japan Inst. Metals, Vol. 34, No. 11 (1970),
pp. 1140-1144

Effect of Zirconium Addition on the Oxidation Resistance and Mechanical Properties of Fe-Al-Cr Alloys

Seiichi Ikeda1, Shigeo Ohashi1 and Goro Ito1

1National Research Institute for Metals, Tokyo

Abstract:

The oxidation resistance of Fe-Al-Cr alloys containing 1 ∼ 3% zirconium in carbon dioxide at temperatures of 600° ∼ 900°C under a pressure of 10 kg/cm2 and mechanical properties of their alloys were studied.
The results were summarized as follows:
(1) The oxidation resistance of Fe-Al-Cr alloys decreased with increase in zirconium content. The oxidation was remarkable especially for the alloys containing 3% zirconium at the testing temperatures of 600° and 700°C.
(2) This violent oxidation phenomenon is attributed to the precipitation of Zr and Cr carbide and internal oxidation of aluminium in the alloys due to carburization from carbon dioxide.
(3) The ductility of the alloy was improved by the addition of zirconium.
(4) The ductility and tensile strength of the tested alloys were highest when they were water quenched from 800°C.
(5) The high temperature creep strength of the alloys were improved with increasing zirconium content.


(Received 1970/7/16)

Keywords:


PDF(Free)PDF (Free)     Table of ContentsTable of Contents

Please do not copy without permission.