Yttrium addition to heat-resistant cast stainless steel

被引：65

作者：

Nunes, FC

Dille, J

Delplancke, JL

de Almeida, LH

机构：

[1] Univ Fed Rio de Janeiro, COPPE, PEMM, BR-21945970 Rio De Janeiro, Brazil

[2] ULB, SME, B-1050 Brussels, Belgium

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 09期

关键词：

yttrium; cast stainless steels; carbides; microstructure;

D O I：

10.1016/j.scriptamat.2006.01.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Yttrium addition to HP-type (where H stands for heat-resistant and P is related to the Ni content) heat-resistant cast stainless steel resulted in increased fragmentation of the primary chromium carbide network and improved high temperature mechanical properties. The improvement was caused by yttrium carbide particles acting as nucleation sites for other carbides, as indicated by transmission electron microscopy and energy dispersive X-ray spectroscopy analysis. Thermodynamic considerations support these conclusions. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1553 / 1556

页数：4

共 29 条

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