INFLUENCE OF ALLOY GRAIN-SIZE ON THE HIGH-TEMPERATURE OXIDATION BEHAVIOR OF SOME STEELS WITH DIFFERENT CR CONTENTS

被引：0

作者：

RAMAN, RKS ^{[1
]}

GNANAMOORTHY, JB ^{[1
]}

ROY, SK ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DEPT MET ENGN,KHARAGPUR 721302,W BENGAL,INDIA

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 1992年 / 45卷 / 06期

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Increase in alloy grain size is found to increase the high temperature oxidation resistance of 2.25Cr-1Mo steel (at 823 K) and 9Cr-1MO steel (at 973 K), in air. This behaviour is attributed to the greater internal oxidation in case of fine grained 2.25Cr-1Mo steel, and to unfavourable scale morphology leading to spallation in case of 9Cr-1Mo steel. At 973 K, oxidation resistance increased with decreasing grain size in an SS 316, because of enhanced grain boundary diffusion of Cr leading to early formation of a protective layer.

引用

页码：391 / 398

页数：8

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