Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23203
Title: Hot deformation behavior of the 1.15C-4.00Cr-3.00V-6.00W-5.00Mo powder metallurgy high speed steel
Authors: Liu, Y
Ning, Y
Yao, Z
Fu, MW 
Keywords: Advanced processing maps
Constitutive modeling
Hot workability
Hot workings
Powder metallurgy high speed steel
Issue Date: 2014
Publisher: Elsevier Ltd
Source: Materials and design, 2014, v. 54, p. 854-863 How to cite?
Journal: Materials and Design 
Abstract: The deformation behavior of the 1.15C-4.00Cr-3.00V-6.00W-5.00Mo powder metallurgy (PM) high speed steel in hot working process was investigated by the isothermal compression tests carried out at the temperature of 950-1150°C and the strain rate of 0.001-1.0s-1 with the height reduction of 60%. True stress-true strain curves are investigated; the hot deformation activation energy of the steel is determined to be 750kJ/mol, and a constitutive equation is obtained. The processing maps were constructed, identification of the instability region and optimization of hot deformation parameters. It is found that the hot working process of the steel can be carried out safely in the domain of (Td: 1000-1150°C, ε·: 0.006-0.1s-1). To obtain the homogeneous microstructure with fine grains, the hot working process should be carried out at the condition of (Topi: 1050°C, ε·opi: 0.1s-1). The flow instability is expected in the two domains at 1030-1150°C/0.1-1.0s-1 and 1000-1075°C/0.001-0.006s-1. Furthermore, the true strain takes a great effect on processing maps in which the efficiency of power dissipation obviously changes with the increase of strain from 0.05 to 0.90.
URI: http://hdl.handle.net/10397/23203
ISSN: 1873-4197
DOI: 10.1016/j.matdes.2013.08.093
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

12
Last Week
0
Last month
0
Citations as of Jun 25, 2017

WEB OF SCIENCETM
Citations

8
Last Week
0
Last month
0
Citations as of Jun 23, 2017

Page view(s)

33
Last Week
0
Last month
Checked on Jun 25, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.