Low temperature mechanical properties of 316L type stainless steel after hydrostatic extrusion

被引：51

作者：

Czarkowski, P. ^{[1
]}

Krawczynska, A. T. ^{[1
]}

Slesinski, R. ^{[1
]}

Brynk, T. ^{[1
]}

Budniak, J. ^{[1
]}

Lewandowska, M. ^{[1
]}

Kurzydlowski, K. J. ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

来源：

FUSION ENGINEERING AND DESIGN | 2011年 / 86卷 / 9-11期

关键词：

Nanostructured stainless steel; Low temperature mechanical properties; SEVERE PLASTIC-DEFORMATION; NANOSTRUCTURED METALS; TITANIUM; SIZE;

D O I：

10.1016/j.fusengdes.2010.12.067

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

316L-type stainless steel is commonly used in fusion devices. Its mechanical properties at cryogenic temperatures, for rolled or forged products possessing a grain size of tens of micrometers have been widely reported. In this paper we present the properties of this steel after multi-pass hydrostatic extrusion (HE), which brought about significant grain refinement to the nanometer scale. Such grain refinement of 316L-type stainless steel would be expected to improve the yield and ultimate tensile strength and may also result in a better resistance to irradiation. The microstructure of the HE processed samples was determined by electron microscopy and the mechanical properties evaluated by its microhardness under a load of 200 g and by tensile tests at room temperature and after immersion in liquid nitrogen. The observed improvements of the mechanical properties are discussed in terms of the microstructural changes arising from the hydrostatic extrusion. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2517 / 2521

页数：5

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