Cracking of cast iron cylinder liners in some large railway diesel engines is identified as a high strain fatigue problem. A series of low-cycle fatigue tests on three cast irons is reported. An improved material, in which the cooling rate in the critical region of the cylinder liner is slower than normal, has been produced and is shown to be clearly superior to two cast irons used extensively in service. This superiority is due to an improved resistance to both fatigue crack initiation and propagation.
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References
1.
TOORP. M.: Ph.D. thesis, 1968, Imperial College, University of London.
2.
RADONJ. C. et al: ESI, 1966, 204, 928.
3.
ENDOT. and MORROWJ. D.: J. Mat., 1969, 4, (1), 159.
4.
TOPPERT. H. and GOWDAC. V. B.: paper presented at design engineering conference and show, Chicago, Illinois, May 1970, American Society of Mechanical Engineers paper no.70-DE--24.
5.
WETZELR. M. et al: ‘Fatigue of notched parts with emphasis on local stresses and strains’, report no. NADC-ST-6818; 1968, Warminster, Pennsylvania, Naval Air Development Centre.
6.
COFFINL. F. and WESLEYG.: Trans. ASME, 1954, 76, 923.
7.
MAJORW.: ibid., 1959, 51,421.
8.
PELISSIERG. E. et al: Trans. ASM, 1942, 30, 1044.
9.
FELTNERC. E. and MITCHELLM. R.: ‘Basic research on the cyclic deformation and fracture behaviour of materials‘, manual on low-cycle fatigue testing, ASTM STP 465, 27; 1969, American Society for Testing and Materials.
10.
LANGRAFR. W. et al: J. Mat., 1969,4, (1), 176.
11.
WATSONF. and TOPPERT. H.: ‘An evaluation of the fatigue performance of automative steels’, Society of Automative Engineers paper no.710597. June 1971.
12.
LANGRAFR. W.: ‘The resistance of metals to cyclic deformation‘, ASTM STP 467, 3; 1970, American Society for Testing and Materials.
