Microstructure of tool steel upon combined semi-solid processing and thermomechanical treatment

被引：0

作者：

机构：

[1] Mašek, B.

[2] Aišman, D.

[3] Jirková, H.

来源：

Aišman, D. (daisman@vctt.zcu.cz) | 1600年 / Elsevier Ltd卷 / 586期

关键词：

Semi-solid processing can lead to microstructures with a high proportion of metastable austenite embedded in carbide-austenite network even in ordinary steels. This type of microstructure is a result of non-uniform distribution of alloying elements in a partially melted material. The paper deals with semi-solid processing and heat treatment of the ledeburitic steel with 1.8% carbon and 11% chromium. Its initial microstructure typically consists of ferrite matrix with primary chromium carbides and globular cementite particles. Upon semi-solid processing; the material comprised 95% metastable austenite; predominantly in the form of polyhedral grains with the size of 19 μm. Previous research has demonstrated the grain refinement effect of plastic deformation applied immediately after solidification. In follow-up experiments; the influence of thermomechanical treatment upon subsequent evolution of microstructure was studied. In this experiment; particular attention was devoted to the decomposition of metastable austenite and its contribution to microstructure refinement. Upon the transition through the semi-solid state; the material was cooled down below its solidus temperature and subjected to deformation. This was followed by several cooling schedules. Some of the schedules included a dwell at 600 C to allow metastable austenite to decompose. Cooling schedules were immediately followed by heating to austenitizing temperature and cooling to room temperature at an equal rate. These procedures produced various types of microstructures. The treatment with the dwell produced mixed-type microstructures with an exceptional form of martensite and partially decomposed carbide network. Processing without the dwell led to the development of microstructures with polyhedral retained austenite grains embedded in the original carbide network. Their hardness ranged from 445 to 850 HV30. © 2012 Elsevier B.V. All rights reserved;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

共 50 条

[11] Glazing of tool dies for semi-solid steel forming
D. Brabazon
S. Naher
P. Biggs
International Journal of Material Forming, 2008, 1 : 985 - 988
[12] Thermomechanical processing of AA6061 billets for semi-solid forming
Materials Institute, Marmara Research Center, TUBITAK Gebze, Kocaeli
41470, Turkey
Z Metallkd, 2007, 1 (53-59): : 53 - 59
[13] Thermomechanical processing of AA6061 billets for semi-solid forming
Birol, Yucel
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2007, 98 (01) : 53 - 59
[14] Finite-element simulation of semi-solid metal processing of tool steel encased in carbon steel
Ritter, Eduardo Paixao
Stumpf, Felipe Tempel
SIMULATION-TRANSACTIONS OF THE SOCIETY FOR MODELING AND SIMULATION INTERNATIONAL, 2022, 98 (07): : 563 - 574
[15] DEVELOPMENT OF MICROSTRUCTURE FROM POWDER TOOL STEEL OBTAINED THROUGH SEMI-SOLID METAL WORKING
Masek, Bohuslav
Aisman, David
Jirkova, Hana
Kusy, Martin
21ST INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2012), 2012, : 318 - 322
[16] Laser Surface Modification of Tool Steel for Semi-Solid Steel Forming
Brabazon, Dermot
Naher, Sumsun
Biggs, Patrick
SEMI-SOLID PROCESSING OF ALLOYS AND COMPOSITES X, 2008, 141-143 : 255 - 260
[17] Effects of processing parameters on microstructure of semi-solid magnesium alloy
~*Shusen WU
ChinaFoundry, 2004, (01) : 45 - 48
[18] Effects of Chemical Composition on Microstructure Evolution in Semi-solid Processing
Aisman, David
Jenicek, Stepan
Rubesova, Katerina
2015 INTERNATIONAL CONFERENCE ON MATERIALS AND ENGINEERING AND INDUSTRIAL APPLICATIONS (MEIA 2015), 2015, : 98 - 103
[19] Semi-solid processing of ultrahigh-carbon steel castings
Ramadan, Mohamed
Takita, Mitsuharu
Nomura, Hiroyuki
El-Bagoury, Nader
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 430 (1-2): : 285 - 291
[20] Melt-spinning and semi-solid processing of bainitic steel
Rogal, L.
Solano-Alvarez, W.
Bhadeshia, H. K. D. H.
MATERIALS SCIENCE AND TECHNOLOGY, 2017, 33 (07) : 870 - 878

← 1 2 3 4 5 →