On the use of a new ultrahigh-strength Cr-Mn austenitic stainless steel in gas turbine's exhaust systems

被引：0
|
作者：
Martins, Rui F. [1 ,2 ]
Matos, Joao B. [1 ]
Branco, Carlos M. [2 ]
机构：
[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Engn Mecan & Ind, Nucl Projecto MaquinasUNIDEMI, Campus Caparica, P-2829516 Caparica, Portugal
[2] ICEMS IST, P-1049001 Lisbon, Portugal
来源：
11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷
关键词：
Cr-Mn austenitic stainless steel; AISI 316L SS; Naval gas turbines; Thermal shock resistance; Corrosion resistance;
D O I：
10.1016/j.proeng.2011.04.421
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The local substitution of AISI 316L stainless steel grade type by a new ultrahigh-strength Cr-Mn austenitic stainless steel was assessed in order to eliminate the high temperature fatigue crack propagation, mainly due to thermal shock, that has been verified in some exhaust systems of naval gas turbines. Results obtained in tensile and fatigue strength tests, carried out in base materials and dissimilar butt-welded joints, at 24, 350 and 500 degrees C, are presented. Cyclic mechanical properties and thermal shock resistance values were calculated and compared, together with the pitting corrosion resistance of the two materials under study. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11
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页数：6
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