Effect of cooling rate on the microstructure and properties of FeCrVC

被引：32

作者：

Bleckmann, M. ^{[1
]}

Gleinig, J. ^{[2
]}

Hufenbach, J. ^{[2
]}

Wendrock, H. ^{[2
]}

Giebeler, L. ^{[2
,3
]}

Zeisig, J. ^{[2
]}

Diekmann, U. ^{[4
]}

Eckert, J. ^{[2
,3
]}

Kuehn, U. ^{[2
]}

机构：

[1] WIWeB, D-85435 Erding, Germany

[2] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany

[3] Tech Univ Dresden, Inst Mat Sci, D-01069 Dresden, Germany

[4] Metatech GmbH, D-59174 Kamen, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 634卷

关键词：

Metals and alloys; Thermal analysis; Microstructure; Phase transitions; Thermodynamic modeling; HIGH-SPEED STEELS; TRANSFORMATION-INDUCED PLASTICITY; CR-V-C; STAINLESS-STEEL; SOLIDIFICATION; DSC;

D O I：

10.1016/j.jallcom.2015.02.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work a systematic investigation of the influence of the cooling rate on the microstructure and properties of a newly developed Fe92.7Cr4.2V2.1C1 (FeCrVC) tool steel is presented. By applying a tailored casting process and sufficiently high cooling rates excellent mechanical properties are obtained for the presented alloy already in the as-cast state. Since no subsequent heat treatment is required, the cooling parameters applied during the casting process play a key role with respect to the evolving microstructure and resulting properties. In the present publication the effect of the cooling rate on the microstructure and properties of as-solidified FeCrVC was investigated. By using differential scanning calorimetry (DSC), several samples were heated up and cooled with continuous rates of 3-50 K/min. The received DSC data was used to investigate the alloy's solidification and phase transformation behavior. Subsequently, these samples were studied regarding their properties and microstructure by different analysis methods (EDX/WDX, EBSD, XRD). With increasing cooling rates the liquidus and solidus temperature are lowered, whereas the solidification interval is enlarged. A higher cooling rate is accompanied by a lower solidification time which results in a refinement of the dendritic microstructure. Furthermore, with rising cooling rates the microhardness increased. This provides the opportunity to make predictions from the applied cooling parameters upon the hardness and vice versa and enables one to draw first conclusions on the mechanical properties of the FeCrVC alloy. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：200 / 207

页数：8

共 31 条

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