MICROSTRUCTURE AND TOUGHNESS OF CR-W AND CR-V FERRITIC STEELS

被引：37

作者：

ABE, F

ARAKI, H

NODA, T

OKADA, M

机构：

[1] Natl Research Inst for Metals, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 1988年 / 155卷 / pt B期

关键词：

Metallography--Microstructures - Steel--Activation - Strength of Materials;

D O I：

10.1016/0022-3115(88)90390-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to obtain an optimum alloy composition of reduced-activation Cr-W-V ferritic steels, the microstructural evolution during thermal aging at 823-973 K and its effect on the toughness were investigated for simple Cr-W and Cr-V steels by means of transmission electron microscopy and Charpy impact testing. The microstructural evolution of the Cr-W steels was similar to that of the conventional Cr-Mo steels. Carbides precipitated in the martensite and the intermetallic compound Fe2W precipitated in the δ-ferrite of the Cr-W steels. On the other hand, only carbides precipitated in both the martensite and the δ-ferrite of the Cr-V steels. The effect of Cr, W and V on the thermal embrittlement is discussed by taking account of the precipitation behavior.

引用

页码：656 / 661

页数：6

共 15 条

[1] EFFECT OF SPECIMEN SIZE ON THE DUCTILE BRITTLE TRANSITION BEHAVIOR AND THE FRACTURE SEQUENCE OF 9CR-W STEELS [J].