Creep, low cycle fatigue and creep-fatigue properties of a modified HR3C

被引：9

作者：

He, Junjing ^{[1
]}

Sandstrom, Rolf ^{[1
]}

Vujic, Stojan ^{[2
]}

机构：

[1] KTH Royal Inst Technol, Mat Sci & Engn, SE-10044 Stockholm, Sweden

[2] Graz Univ Technol, Inst Mat Sci & Welding, Kopernikusgasse 24, A-8010 Graz, Austria

来源：

21ST EUROPEAN CONFERENCE ON FRACTURE, (ECF21) | 2016年 / 2卷

关键词：

Low cycle fatigue; Creep fatigue; Creep; Austenitic stainless steels; HR3C; AUSTENITIC STAINLESS-STEELS; ELEVATED-TEMPERATURE; BEHAVIOR;

D O I：

10.1016/j.prostr.2016.06.112

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Creep, low cycle fatigue (LCF) and creep fatigue tests have been conducted for modified HR3C (25Cr20NiNbN) at high temperatures ranging of 650-750 degrees C. Both LCF and creep fatigue test results could be described with the Coffin-Manson relationship. The number of cycles to failure in the creep fatigue tests was more than one order of magnitude lower compared with LCF. The effect of the total hold time in tension (the total creep time) was compared to creep rupture data. The creep fatigue results were in reasonable agreement with the creep tests. The short creep fatigue lives may be due to the low creep ductility which was found in the creep tests. Fractography showed that the rupture mode was intergranular. Cavities were observed at grain boundaries due to the fracture of the primary Z phase particles in both LCF and creep fatigue tests. In comparison to Sanicro 25, the modified HR3C showed better LCF properties. Copyright (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：871 / 878

页数：8

共 6 条

[1] Low cycle fatigue behavior and mechanism of newly developed advanced heat resistant austenitic stainless steels at high temperature [J].

Chai, Guocai .

11TH INTERNATIONAL FATIGUE CONGRESS, PTS 1 AND 2, 2014, 891-892 :377-+

[2]

ECCC 2005, 2005, EUR CREEP COLL COMM, P120

[3]

IEA 2015, 2005, WORLD EN OUTL 2015 F

[4]

Nilsson J. O., 2005, HIGH TEMPERATURE TEC, V6, P181

[5] Low cycle fatigue behavior of Sanicro25 steel at room and at elevated temperature [J].

Polak, Jaroslav ;

Petras, Roman ;

Heczko, Milan ;

Kubena, Ivo ;

Kruml, Tomas ;

Chai, Guocai .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 615 :175-182

[6] ELEVATED-TEMPERATURE LOW-CYCLE FATIGUE OF THE AUSTENITIC STAINLESS-STEELS TYPE-316 AND TYPE-253MA - INFLUENCE OF MICROSTRUCTURE AND DAMAGE MECHANISMS [J].

SANDSTROM, R ;

ENGSTROM, J ;

NILSSON, JO ;

NORDGREN, A .

HIGH TEMPERATURE TECHNOLOGY, 1989, 7 (01) :2-10

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