Superior creep resistance of a high-Cr steel with Re additives

被引：17
作者：
Fedoseeva, A. [1 ]
Nikitin, I [1 ]
Dudova, N. [1 ]
Kaibyshev, R. [1 ]
机构：
[1] Belgorod Natl Res Univ, Belgorod 308015, Russia
来源：
MATERIALS LETTERS | 2020年 / 262卷
基金：
俄罗斯科学基金会;
关键词：
Metals and alloys; Creep; Electron microscopy; Microstructure; Particles; Diffusion; LAVES-PHASE; STRENGTH; PRECIPITATION; MECHANISMS; CARBIDES; BEHAVIOR;
D O I：
10.1016/j.matlet.2019.127183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Re-containing 10Cr-3Co-3W martensitic steel with low nitrogen and high boron contents exhibited a rupture time of 10,987 hat 650 degrees C/140 MPa. This superior creep resistance was caused by partially saved tempered martensite lath structure due to precipitation of M23C6 carbides and Laves phase chains on lath boundaries as well as their high resistance to coarsening. M23C6 carbides were characterized by decreased interfacial energy that resulted in the retention of the orientation relationship between M23C6 carbides and ferritic matrix. Re slowed down diffusion of W, Mo and Cr atoms. (C) 2019 Elsevier B.V. All rights reserved.
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页数：4
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