HYDROGEN EMBRITTLEMENT OF PEARLITIC STEELS PRONE TO TEMPER BRITTLENESS

被引：0

作者：

PLATONOV, PA

AMAEV, AD

NIKOLAEV, VA

TURSUNOV, IE

KRASIKOV, EA

LEVIT, VI

机构：

[1] State Committee on the Use of Atomic, Energy, Russia

来源：

SOVIET MATERIALS SCIENCE | 1988年 / 24卷 / 02期

关键词：

Fracture Mechanics - Iron and Alloys - Aging - Iron and Steel Analysis - Hydrogen Determination - Iron and Steel Metallography - Pearlite - Iron Chromium Nickel Alloys - Impurities;

D O I：

10.1007/BF00736355

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Steels in the condition of temper brittleness are distinguished by an increased tendency toward embrittlement in aggressive hydrogen-containing media. In this study type 20Kh3N chrome-nickel steel, which possesses a high tendency toward temper brittleness, was studied. The specimens, separated into several lots, were aged at 400 °C with a hold time from 1 to 10,000 hours. By varying the hold time different levels of segregation of the impurity elements, primarily phosphorus, at the boundaries of the former austenitic grains were created and evaluated. On the basis of experimental results in this study and on information in the literature, the authors conclude that impurities made up of the group of tin, antimony, and phosphorus are responsible for temper brittleness of steel.

引用

页码：153 / 157

页数：5