SEMISOLID PROCESSING OF ALUMINUM AND HIGH MELTING-POINT ALLOYS

被引:54
作者
KAPRANOS, P
KIRKWOOD, DH
SELLARS, CM
机构
关键词
D O I
10.1243/PIME_PROC_1993_207_055_02
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thixoforging (a semi-solid metal-forming process) of non-dendritic A357 aluminium alloy has been studied to assess the effects of process variables on the component integrity. Complete filling of the dies required ram velocities in excess of 300 mm/s and centre-line porosity in the thixoforged components was reduced by ram loads up to 55 kN. The mechanical properties of these thixoforgings were superior to conventionally cast alloy. Some work has also been carried out on M2 tool steel and Stellite 21 to demonstrate that these alloys may be thixoforged to complex shapes with good mechanical properties.
引用
收藏
页码:1 / 8
页数:8
相关论文
共 11 条
[1]  
Spencer D.B., Mehrabian R., Flemings M.C., Rheological bahaviour of Sn–15% Pb in crystallization range, Metall. Trans., 3, pp. 1925-1932, (1972)
[2]  
Joly P.A., Mehrabian R., The rheology of a partially solidified alloy, J. Mater. Sci., 11, pp. 1393-1418, (1976)
[3]  
Flemings M.C., Behaviour of metal alloys in the semisolid state, Metall. Trans., 22A, pp. 957-981, (1991)
[4]  
Kenney M.P., Courtois J.A., Evans R.D., Farrier G.M., Kyonka C.P., Koch A.A., Young K.P., Metals handbook, 15, pp. 327-338, (1988)
[5]  
Leatham A., Ogilvy A., Chesney P., Wood J.V., Osprey process, Metals and Mater., 5, 3, pp. 140-143, (1989)
[6]  
Boyed L.E., Kirkwood D.H., Sellars C.M., pp. 285-295, (1988)
[7]  
Robert M.H., Kirkwood D.H., pp. 405-408, (1988)
[8]  
Kapranos P., Kirkwood D.H., Sellars C.M., pp. 165-170, (1990)
[9]  
McLelland A.R.A., Atkinson H.V., Kapranos P., Kirkwood D.H., pp. 52-55, (1990)
[10]  
McLelland A.R.A., Atkinson H.V., Kapranos P., Kirkwood D.H., Mater. Lett., 11, 1, pp. 26-30, (1991)