Fracture and fatigue resistance of Mo-Si-B alloys for ultrahigh-temperature structural applications

被引：89
作者：
Kruzic, JJ
Schneibel, JH
Ritchie, RO
机构：
[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Div Sci Mat, Berkeley, CA 94720 USA
[3] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA
来源：
SCRIPTA MATERIALIA | 2004年 / 50卷 / 04期
关键词：
fracture; fatigue; toughness; molybdenum; silicides;
D O I：
10.1016/j.scriptamat.2003.11.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fracture and fatigue properties are examined for a series Of Mo-Mo3Si-Mo5SiB2 alloys, which utilize a continuous alpha-Mo matrix to achieve unprecedented room-temperature fracture resistance (>20 MParootm). Mechanistically, these properties are explained in terms of toughening by crack trapping and crack bridging by the more ductile alpha-Mo phase. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：459 / 464
页数：6
相关论文
共 18 条
[1]   Boron-doped molybdenum silicides for structural applications [J].
Akinc, M ;
Meyer, MK ;
Kramer, MJ ;
Thom, AJ ;
Huebsch, JJ ;
Cook, B .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 261 (1-2) :16-23
[2]  
Berczik D.M., 1997, US Patent, Patent No. 5595616
[3]  
BERCZIK DM, 1997, Patent No. 5693156
[4]  
Chen D, 2000, J TEST EVAL, V28, P236, DOI 10.1520/JTE12100J
[5]   On the fracture and fatigue properties of Mo-Mo3Si-Mo5SiB2 refractory intermetallic alloys at ambient to elevated temperatures (25 °C to 1300 °C) [J].
Choe, H ;
Schneibel, JH ;
Ritchie, RO .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34 (02) :225-239
[6]   Ambient to high temperature fracture toughness and fatigue-crack propagation behavior in a Mo-12Si-8.5B (at.%) intermetallic [J].
Choe, H ;
Chen, D ;
Schneibel, JH ;
Ritchie, RO .
INTERMETALLICS, 2001, 9 (04) :319-329
[7]  
Donachie M., 2002, SUPERALLOYS TECHNICA, P439
[8]   BACK-FACE STRAIN COMPLIANCE AND ELECTRICAL-POTENTIAL CRACK LENGTH CALIBRATIONS FOR THE DISK-SHAPED COMPACT-TENSION DC(T) SPECIMEN [J].
GILBERT, CJ ;
MCNANEY, JM ;
DAUSKARDT, RH ;
RITCHIE, RO .
JOURNAL OF TESTING AND EVALUATION, 1994, 22 (02) :117-120
[9]   CYCLIC FATIGUE IN MONOLITHIC ALUMINA - MECHANISMS FOR CRACK ADVANCE PROMOTED BY FRICTIONAL WEAR OF GRAIN BRIDGES [J].
GILBERT, CJ ;
PETRANY, RN ;
RITCHIE, RO ;
DAUSKARDT, RH ;
STEINBRECH, RW .
JOURNAL OF MATERIALS SCIENCE, 1995, 30 (03) :643-654
[10]  
JOHNSON WA, 1990, METALS HDB, V2, P574
12