Growth mechanism of in situ TiB whiskers in spark plasma sintered TiB/Ti metal matrix composites

被引:143
作者
Feng, HB [1 ]
Zhou, Y [1 ]
Jia, DC [1 ]
Meng, QC [1 ]
Rao, JC [1 ]
机构
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
关键词
D O I
10.1021/cg050443k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In situ TiB whisker reinforced Ti-4.0Fe-7.3Mo matrix composites have been fabricated by spark plasma sintering (SPS). The microstructure of the in situ TiB whiskers and interfacial structures in the composites were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution electron microscopy (HREM). The interfaces between in situ TiB and the Ti matrix are clean and faceted along the ( 100)(TiB) plane. However, small lateral growth steps are observed along the ( 101) and (10 (1) over bar) planes of TiB. Because of the characteristics of the TiB crystal structure, the growing velocity of the ( 100)(TiB) plane along the [ 010](TiB) direction is much faster than that of the [ 001](TiB) direction, which leads to TiB growth as a whisker shape along the [ 010](TiB) direction with a hexagonal transverse section. The growth mechanism of TiB whiskers is a stacking process of the ( 100)(TiB) plane.
引用
收藏
页码:1626 / 1630
页数:5
相关论文
共 26 条
[1]   Elastic properties of in-situ processed Ti-TiB composites measured by impulse excitation of vibration [J].
Atri, RR ;
Ravichandran, KS ;
Jha, SK .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 271 (1-2) :150-159
[2]   THE EFFECT OF PRECONSOLIDATION HEAT-TREATMENT ON TIB MORPHOLOGY AND MECHANICAL-PROPERTIES OF RAPIDLY SOLIDIFIED TI-6AL-4V-XB ALLOYS [J].
FAN, Z ;
CHANDRASEKARAN, L ;
WARDCLOSE, CM ;
MIODOWNIK, AP .
SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (06) :833-838
[3]   The kinetics and mechanism of interfacial reaction in sigma fibre-reinforced Ti MMCs [J].
Fan, Z ;
Guo, ZX ;
Cantor, B .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 1997, 28 (02) :131-140
[4]   Microstructural evolution in rapidly solidified Ti-7.5 Mn-0.5 B alloy [J].
Fan, Z ;
Miodownik, AP .
ACTA MATERIALIA, 1996, 44 (01) :93-110
[5]   Spark plasma sintering of functionally graded material in the Ti-TiB2-B system [J].
Feng, HB ;
Meng, QC ;
Zhou, Y ;
Jia, DC .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 397 (1-2) :92-97
[6]   Spark plasma sintering reaction synthesized TiB reinforced titanium matrix composites [J].
Feng, HB ;
Jia, DC ;
Zhou, Y .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2005, 36 (05) :558-563
[7]   Rapid synthesis of Ti alloy with B addition by spark plasma sintering [J].
Feng, HB ;
Zhou, Y ;
Jia, DC ;
Meng, QC .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 390 (1-2) :344-349
[8]   Microstructure and mechanical properties of in situ TiB reinforced titanium matrix composites based on Ti-FeMo-B prepared by spark plasma sintering [J].
Feng, HB ;
Zhou, Y ;
Jia, DC ;
Meng, QC .
COMPOSITES SCIENCE AND TECHNOLOGY, 2004, 64 (16) :2495-2500
[9]  
FENG HB, 2005, MAT T, V3, P575
[10]   Microstructure and tensile properties of mechanically alloyed Ti-6Al-4V with boron additions [J].
Godfrey, TMT ;
Wisbey, A ;
Goodwin, PS ;
Bagnall, K ;
Ward-Close, CM .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 282 (1-2) :240-250