Creep rates and strengthening mechanisms in tungsten-trengthened 9Cr steels

被引：148

作者：

Abe, F ^{[1
]}

机构：

[1] Natl Res Inst Met, Frontier Res Ctr Struct Mat, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 319卷

关键词：

9Cr steel; tungsten; tempered martensite; creep rated; creep rupture strength;

D O I：

10.1016/S0921-5093(00)02002-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The creep deformation behavior has been investigated for simple 9Cr-W and solute modified 9Cr-WVTa steels containing high W, where Fe2W Laves phase precipitates during creep. Creep tests were carried out at 823, 873 and 923 K for up to 15 000 h. The precipitation of Fe2W effectively decreases a minimum creep rate, but the large coarsening of Fe2W promotes the acceleration of creep rate after reaching a minimum creep rate. As a result, the effect of Fe2W on the extension of creep rupture time is rather small, The fine MC carbides are significantly effective for the stabilization of lath martensitic microstructure. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：770 / 773

页数：4

共 8 条

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[8]

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