VARIOUS PROPERTIES OF MARAGING STEELS AND THE MECHANISM TO IMPROVE STRENGTH AND TOUGHNESS.

被引：0

作者：

Okada, Yasutaka

机构：

来源：

Sumitomo Metals | 1988年 / 40卷 / 02期

关键词：

METALS TESTING - Fracture - STEEL - Strengthening - STEEL HEAT TREATMENT - STEEL TESTING - Fatigue;

D O I：

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学科分类号：

摘要：

18 PERCENT nickel maraging steel with cobalt, molybdenum and titanium shows high strengths of 140 to 260 kgf/mm**2 in addition to superior toughness. In this paper, various properties and mechanisms which can be used to improve strength and toughness are reviewed. Various properties of maraging steels related to tensile properties, fatigue resistance, delayed fracture and dimension change on heat treatment are described, together with information on impurity control and key points in heat treatment. To understand the mechanism of strengthening with superior toughness, precipitation behaviour and the relationship between strength and toughness were investigated in various alloy systems, including a conventional 18 PERCENT maraging steel. It was found that the addition of molybdenum and titanium not only increased strength but also improved toughness.

引用

页码：207 / 214