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
收藏
页码：240 / 242
页数：3
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