Transient Effects in Creep of Sanicro 25 Austenitic Steel and Their Modelling

被引：3

作者：

Kloc, Lubos ^{[1
]}

Sklenicka, Vaclav ^{[1
,2
]}

Dymacek, Petr ^{[1
,2
]}

机构：

[1] AS CR, Inst Phys Mat, Vvi, Zizkova 22, CZ-61662 Brno, Czech Republic

[2] AS CR, Inst Phys Mat, CEITEC IPM, Vvi, Zizkova 22, CZ-61662 Brno, Czech Republic

来源：

METALS | 2019年 / 9卷 / 02期

关键词：

creep; transient effects; Sanicro; 25; high temperature steels; STAINLESS-STEEL; FATIGUE; AMBIENT;

D O I：

10.3390/met9020245

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transient effects upon stress changes during creep of the new Sanicro 25 steel were investigated experimentally using the helicoid spring specimen technique. The creep behaviour was found to be qualitatively the same as that observed earlier with the creep-resistant 9% Cr ferritic-martensitic P-91 steel, but the transient strains are considerably smaller. Negative creep rate, which is strain running against the applied stress, was observed with any stress decrease. Parameters for the complex creep model were estimated and model results were compared to the creep rates measured experimentally. The model can be used for the finite element method modelling of the creep and stress relaxation effects in the components made from the Sanicro 25 steel.

引用

页数：10

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