Exceptionally high strength and good ductility in an ultrafine-grained 316L steel processed by severe plastic deformation and subsequent annealing

被引：26

作者：

El-Tahawy, Moustafa ^{[1
,2
]}

Pereira, Pedro Henrique R. ^{[3
]}

Huang, Yi ^{[3
]}

Park, Hyeji ^{[4
]}

Choe, Heeman ^{[4
]}

Langdon, Terence G. ^{[3
]}

Gubicza, Jeno ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Dept Mat Phys, Budapest, Hungary

[2] Tanta Univ, Dept Phys, Fac Sci, Tanta, Egypt

[3] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton, Hants, England

[4] Kookmin Univ, Sch Mat Sci & Engn, Seoul, South Korea

来源：

MATERIALS LETTERS | 2018年 / 214卷

基金：

欧洲研究理事会; 匈牙利科学研究基金会;

关键词：

Metals and alloys; Nanocrystalline materials; Annealing; Microstructure; Deformation and fracture; AUSTENITIC STAINLESS-STEEL; HIGH-PRESSURE TORSION; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEMPERATURE; BEHAVIOR;

D O I：

10.1016/j.matlet.2017.12.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An investigation was conducted to evaluate the effect of annealing at different temperatures on the tensile properties of ultrafine-grained 316L stainless steel processed by high-pressure torsion (HPT). A "moderate-temperature" annealing at 740 K resulted in reduced strength and elongation due to the annihilation of mobile dislocations. A "high-temperature" annealing at 1000 K yielded a remarkably good combination of yield strength (similar to 1330 MPa) and elongation to failure (similar to 43%) which can be attributed to the almost full reversion of alpha'-martensite formed during HPT into gamma-austenite while the grain size remained very fine with a value of about 200 nm. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：240 / 242

页数：3

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