Zobrazeno 1 - 10
of 65
pro vyhledávání: '"F.W. Noble"'
Autor:
S.A. Lockyer, F.W. Noble
Publikováno v:
Materials Science and Technology. 15:1147-1153
The fatigue resistance and tensile properties of a precipitate strengthened Cu–Ni–Si alloy have been investigated. Underaged material exhibited greater work hardening rates than either the peak aged or overaged material. It is proposed that this
Autor:
J. Cheng, F.W. Noble
Publikováno v:
Scripta Metallurgica et Materialia. 33:1513-1518
Warm prestressing (wps) is the phenomenon by which the fracture resistance of a material containing a crack is apparently enhanced if the material is (warm) prestressed at a temperature above that at which it is eventually fractured. The wps effect i
Publikováno v:
Journal of Nuclear Materials. 186:100-116
Following long-term ageing, at 450 and 550°C, the microstructure of Nimonic PE16 was observed to remain highly stable: the size and distribution of the principal strengthening phase γ' hardly altered at all, while only limited M23C6 carbide precipi
Autor:
F.W. Noble, A.V. Kington
Publikováno v:
Materials Science and Engineering: A. 138:259-266
A study has been made of the effect of systematic variations in σ phase content on the ductility of a wrought type 310 stainless steel. The steel initially contained 1.3% σ-ferrite in the form of platelets lying in the rolling plane. Heat treatment
Publikováno v:
Materials Science and Technology. 7:315-320
Samples of a 9Cr–1Mo and a 2·25Cr–1Mo steel (both wt-%) have been heat treated to produce microstructures that are likely to form in the heat affected zone of a weld. Two treatments were employed for this purpose, involving quenching (i) from an
Publikováno v:
Materials Science and Technology. 7:218-223
A 9Cr–1Mo (wt- %) steel and a 2·25Cr–1Mo steel have been investigated in the quenched and tempered condition and after subsequent aging at 550°C for either 1000 or 5000 h. Transmission electron microscopy (TEM) was used to characterise the micr
Publikováno v:
Acta Metallurgica et Materialia. 38:709-717
The ductile fracture characteristics of three special casts of 9Cr-1Mo steel with different phosphorus contents have been studied using plain tensile, notched tensile and Charpy impact specimens. A commercial cast of this steel has also been investig
Publikováno v:
Acta Metallurgica. 37:1389-1398
The nucleation of voids at inclusions and their subsequent growth have been studied in tensile specimens of a type 304L wrought stainless steel and a type 308L weld metal deformed in tension. Void nucleation in the weld metal was monitored by transmi
Autor:
W Fairhurst, F.W. Noble
Publikováno v:
Acta Metallurgica. 22:985-990
The effect of deviation, from stoichiometry on the strength of single crystals of alloys based on Cd 3 Mg has been studied, mainly at room temperature. Magnesium deficient alloys (down to 17 per cent Mg) exhibit two-phase structures and the observed
Publikováno v:
Acta Metallurgica. 36:1855-1862
A study has been made of the effects of ageing at 550°C on the ductility and fracture mechanisms in a 9 Cr-1 Mo steel. Although the fracture mode remains ductile, ageing at times up to 5000 h causes a progressive reduction in ductility. Voids are nu