Creep feed grinding of a gamma titanium aluminide intermetallic alloy using SiC abrasives

被引:19
作者
Hood, R. [1 ]
Aspinwall, D. K.
Voice, W.
机构
[1] Univ Birmingham, Sch Engn, Birmingham B15 2TT, W Midlands, England
[2] Rolls Royce PLC, Derby DE24 8BJ, England
基金
英国工程与自然科学研究理事会;
关键词
titanium alloys; creep feed grinding; machinability; surface integrity;
D O I
10.1016/j.jmatprotec.2007.03.081
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Experimental results are detailed when creep feed grinding (CFG) a gamma titanium aluminide intermetallic alloy (,gamma-TiAl) Ti-45Al-8Nb-0.2C with SiC abrasives. When using low porosity wheels at a low wheel speed of 15 m/s and a material removal rate of 62.5 mm/s, G-ratios of similar to 15 were produced with workpiece surfaces free of burn. At higher wheel speeds >= 25 m/s, cracks up to 1 mm deep were evident with extreme workpiece surface burn. By increasing the wheel porosity, specific power, cutting forces, workpiece surface burn and cracking were all reduced however, G-ratio was also reduced to similar to 4 with heavy profile wear. Operation at 15 m/s with increasing feed rate and depth of cut reduced G-ratio still further to <1, whilst increasing power and forces by up to 250 and 300%, respectively. Surface integrity evaluation showed that it was possible to produce crack free surfaces with defects <10 mu m from the workpiece surface at low depths of cut, irrespective of feed rate. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:210 / 214
页数:5
相关论文
共 11 条
[1]   The machining of γ-TiAl intermetallic alloys [J].
Aspinwall, DK ;
Dewes, RC ;
Mantle, AL .
CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2005, 54 (01) :99-104
[2]  
Aust E, 1999, ADV ENG MATER, V1, P53, DOI 10.1002/(SICI)1527-2648(199909)1:1<53::AID-ADEM53>3.0.CO
[3]  
2-3
[4]   Reciprocating surface grinding of a gamma titanium aluminide intermetallic alloy [J].
Bentley, SA ;
Goh, NP ;
Aspinwall, DK .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 118 (1-3) :22-28
[5]  
Bentley SA, 1997, ADVANCES IN TURBINE MATERIALS, DESIGN AND MANUFACTURING, P474
[6]   Friction, cooling and lubrication in grinding [J].
Brinksmeier, E ;
Heinzel, C ;
Wittmann, M .
CIRP ANNALS 1999: MANUFACTURING TECHNOLOGY, VOL 48 NO 2 1999, 1999, :581-598
[7]   A review of cutting fluid application in the grinding process [J].
Irani, RA ;
Bauer, RJ ;
Warkentin, A .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2005, 45 (15) :1696-1705
[8]  
MALKIN S, 1989, SOC MANUFAC ENG
[9]  
RUGG D, 2001, P 10 WORLD C TIT HAM, P2727
[10]   Gamma titanium aluminide, TNB [J].
Voice, WE ;
Henderson, M ;
Shelton, EFJ ;
Wu, XH .
INTERMETALLICS, 2005, 13 (09) :959-964