Microstructural development during ageing of an 11% chromium steel alloyed with copper

被引：31

作者：

Hättestrand, M ^{[1
]}

Andrén, HO ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Expt Phys, SE-41296 Gothenburg, Sweden

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 318卷 / 1-2期

关键词：

9-12% chromium steels; P122; copper; energy filtered TEM;

D O I：

10.1016/S0921-5093(01)01304-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Precipitation reactions occurring during ageing at 600 or 650degreesC of the 11% chromium steel P122 have been investigated. Atom probe field ion microscopy (APFIM) and energy filtered transmission electron microscopy (EFTEM) were used to measure the volume fraction and size of different types of precipitates present in the structure. It was found that the addition of 0.87 wt.% copper to the steel gives rise to formation of copper precipitates during tempering and ageing. The influence of this copper precipitation on the growth and coarsening of other phases present and possible consequences for the creep strength of the material are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：94 / 101

页数：8

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