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| 11. |
Effect of fretting amplitudeon microstructure of 1C–1·5Cr steel |
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Materials Science and Technology,
Volume 12,
Issue 4,
1996,
Page 355-361
VodopivecF.,
ViźntinJ.,
SuśtarśićB.,
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摘要:
AbstractA successive grinding technique was used to examine the changes in microstructure generated by fretting of a 1C–1·5 Cr steel. The findings indicated that the white phase was precipitation hardened austenite and that it grew laterally by coalescence of initial areas of a few micrometres. Frequently, very small modifications of the initial microstructure were found near the white phase. This is explained by the small quantity of heat generated and its rapid dissipation in the steel. Similar carbide precipitates to those in the white phase were found in areas of residual austenite in rapidly solidified water atomised particles of the same type of steel.MST/3151
ISSN:0267-0836
DOI:10.1179/mst.1996.12.4.355
出版商:Taylor&Francis
年代:1996
数据来源: Taylor
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| 12. |
In situformation of TiC–(Ti–6Al–4V) composites |
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Materials Science and Technology,
Volume 12,
Issue 4,
1996,
Page 362-365
Q.J.,
S.T.,
J.Y.,
K.B.,
S.H.,
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摘要:
AbstractTitanium based alloys offer significant opportunities for weight reduction in aerospace design and more recently it has been considered that particle reinforced titanium based composites will provide the most practical solutions in this field. In the present paper it is identified that it is possible to produce an in situ TiC–(Ti–6Al–4V) composite via a blended elemental reaction powder metallurgical route. The effect of process parameters on the microstructure and on the presence of possible contaminants and undesirable phases is also examined.MST/3417
ISSN:0267-0836
DOI:10.1179/mst.1996.12.4.362
出版商:Taylor&Francis
年代:1996
数据来源: Taylor
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| 13. |
Fracture toughness of SiC, Si3N4, and sialon ceramics using controlled surface flaws |
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Materials Science and Technology,
Volume 12,
Issue 4,
1996,
Page 366-370
CookS. G.,
KingJ. E.,
LittleJ. A.,
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摘要:
AbstractKnoop and Vickers indentation cracks have frequently been used as model‘precracks’in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1cbut can be removed or accounted for by grinding, annealing, or modelling. Values of K1care obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identifiedfor each material.MST/3242
ISSN:0267-0836
DOI:10.1179/mst.1996.12.4.366
出版商:Taylor&Francis
年代:1996
数据来源: Taylor
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