Microstructure and Mechanical Properties of Precipitate Strengthened High Entropy Alloy Al10Co25Cr8Fe15Ni36Ti6 with Additions of Hafnium and Molybdenum

被引：40

作者：

Haas, Sebastian ^{[1
]}

Manzoni, Anna M. ^{[2
]}

Krieg, Fabian ^{[1
]}

Glatzel, Uwe ^{[1
]}

机构：

[1] Univ Bayreuth, Met & Alloys, D-95440 Bayreuth, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie GmbH, D-14109 Berlin, Germany

来源：

ENTROPY | 2019年 / 21卷 / 02期

关键词：

HEA; high entropy alloys; compositionally complex alloys; mechanical characterization; MULTICOMPONENT; IMAGE;

D O I：

10.3390/e21020169

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High entropy or compositionally complex alloys provide opportunities for optimization towards new high-temperature materials. Improvements in the equiatomic alloy Al17Co17Cr17Cu17Fe17Ni17 (at.%) led to the base alloy for this work with the chemical composition Al10Co25Cr8Fe15Ni36Ti6 (at.%). Characterization of the beneficial particle-strengthened microstructure by scanning electron microscopy (SEM) and observation of good mechanical properties at elevated temperatures arose the need of accomplishing further optimization steps. For this purpose, the refractory metals hafnium and molybdenum were added in small amounts (0.5 and 1.0 at.% respectively) because of their well-known positive effects on mechanical properties of Ni-based superalloys. By correlation of microstructural examinations using SEM with tensile tests in the temperature range of room temperature up to 900 degrees C, conclusions could be drawn for further optimization steps.

引用

页数：14

共 24 条

[1]

[Anonymous], 2006, THERMOTECH NI BASED

[2] Trainable Weka Segmentation: a machine learning tool for microscopy pixel classification [J].

Arganda-Carreras, Ignacio ;

Kaynig, Verena ;

Rueden, Curtis ;

Eliceiri, Kevin W. ;

Schindelin, Johannes ;

Cardona, Albert ;

Seung, H. Sebastian .

BIOINFORMATICS, 2017, 33 (15) :2424-2426

[3] Multicomponent and High Entropy Alloys [J].

Cantor, Brian .

ENTROPY, 2014, 16 (09) :4749-4768

[4] Controllable fabrication of a carbide-containing FeCoCrNiMn high-entropy alloy: microstructure and mechanical properties [J].

Cheng, H. ;

Wang, H. Y. ;

Xie, Y. C. ;

Tang, Q. H. ;

Dai, P. Q. .

MATERIALS SCIENCE AND TECHNOLOGY, 2017, 33 (17) :2032-2039

[5] High-Temperature Tensile Strength of Al10Co25Cr8Fe15Ni36Ti6 Compositionally Complex Alloy (High-Entropy Alloy) [J].

Daoud, H. M. ;

Manzoni, A. M. ;

Wanderka, N. ;

Glatzel, U. .

JOM, 2015, 67 (10) :2271-2277

[6] A scanning tunneling microscopy study of rabbit metallothionein [J].

Davis, J. J. ;

Hill, H. Allen O. ;

Kurz, Arnd ;

Jacob, Claus ;

Maret, Wolfgang ;

Vallee, Bert L. .

PHYSCHEMCOMM, 1998, 1 (02)

[7]

DOHERTY JE, 1971, JOM-J MIN MET MAT S, V23, P59

[8]

DUHL DN, 1971, JOM-J MIN MET MAT S, V23, P38

[9] Quantitative experimental determination of the solid solution hardening potential of rhenium, tungsten and molybdenum in single-crystal nickel-based superalloys [J].

Fleischmann, Ernst ;

Miller, Michael K. ;

Affeldt, Ernst ;

Glatzel, Uwe .

ACTA MATERIALIA, 2015, 87 :350-356

[10]

Glicksman ME, 2011, PRINCIPLES OF SOLIDIFICATION: AN INTRODUCTION TO MODERN CASTING AND CRYSTAL GROWTH CONCEPTS, P1, DOI 10.1007/978-1-4419-7344-3

← 1 2 3 →