Hall-Petch Relationship of a TWIP Steel

F. de las Cuevas; Mónica Reis; A. Ferraiuolo; G. Pratolongo; L. Pentti Karjalainen; Jon Alkorta; J. Gil Sevillano

doi:10.4028/www.scientific.net/KEM.423.147

Paper Titles

Influence of Cold Work in the Elastic Modulus of the Ti-16.2Hf-24.8Nb-1Zr Alloy Characterized by Instrumented Nanoindentation
p.113

Influence of the Milling Time on Mechanical and Magnetic Properties of Cu₉₀Co₅Ni₅ Alloy Obtained by Mechanical Alloying
p.119

Sliding Wear Behavior of a Duplex Stainless Steel
p.125

Creep Behaviour of Closed Cell Aluminium Foams from Stress Relaxation Tests
p.131

A Study of the Mechanical Properties and Recrystallization of Two Types of Foil of Aluminium 1050 A
p.137

Hall-Petch Relationship of a TWIP Steel
p.147

Mechanical Properties of Bioactive Hybrid Organic/Inorganic Aerogels
p.155

Mechanical Properties of Organic-Inorganic Hybrid Black Coating of Silica and Polyurethane
p.161

Creep and Stress Relaxation of Hybrid Organic-Inorganic Aerogels
p.167

HomeKey Engineering MaterialsKey Engineering Materials Vol. 423Hall-Petch Relationship of a TWIP Steel

Hall-Petch Relationship of a TWIP Steel

Abstract:

The grain size dependence of the tensile properties of a TWIP steel has been determined for a wide range of grain sizes obtained by grain growth after complete recrystallization of cold rolled material. The near-linear stress-strain behaviour typical of either TWIP steels or other materials that deform by twinning has been observed, the work hardening rate being larger for the smaller grain sizes. The Hall-Petch slope increases as a function of strain, from 350 MPa μm1/2 for the yield stress to 630 MPa μm1/2 for the maximum uniform strain in the tensile tests, ε  0.40. Profuse twinning is observed in deformed specimens by means of FIB-ISE.