Zobrazeno 1 - 10
of 51
pro vyhledávání: '"V. Šustek"'
Publikováno v:
Scripta Materialia. 40:1269-1275
During the recent several years it has been well recognized that the creep behavior in discontinuous aluminum and aluminum alloy matrix composites processed by powder metallurgy is associated with a true threshold stress at least up to a temperature
Publikováno v:
Materials Science and Engineering: A. 246:252-264
The creep in a 2124 Al alloy reinforced by 20 vol.% silicon carbide particulates—2124 Al‐20 SiCp particulate composite—is investigated in a temperature interval ranging from 623 to 748 K and at applied shear stresses ranging from 2.5 to 40.0 MP
Publikováno v:
Materials Science and Engineering: A. 238:391-398
An attempt is made to shed some new light on the role of recovery in creep of precipitation-strengthened polycrystalline nickel-base creep-resistant alloys, comparing some basic creep data for a Ni–16Cr–10W–4Mo–Ti–Al alloy with similar data
Publikováno v:
Materials Science and Engineering: A. 225:22-28
Recently published creep data for a 9Cr 1Mo 0.2V steel are analysed and an attempt is made to interpret them applying the concept of thermally activated detachment of dislocations from carbide particles as the rate controlling process. For the data,
Publikováno v:
Materials Science and Engineering: A. 215:73-83
The creep behaviour of an Mg 3Zn Ca 1.5Ce 0.5La alloy processed by rapid solidification was investigated at temperatures ranging from 473 K to 523 K and applied stresses up to 82.6 MPa. It is shown that the minimum or steady-state creep strain rate i
Publikováno v:
Scripta Materialia. 35:449-454
In the present paper it was shown that under the above conditions of temperature and applied stress given, the creep strain rate is controlled by the matrix lattice diffusion and is not associated with a threshold stress. The true stress exponent n o
Publikováno v:
Materials Science and Engineering: A. 211:33-44
Results of an investigation of the application of a low frequency “rectangular” cyclic stress, during both the initial and advanced stages of primary creep, on the time dependent strain and strain rate behaviour of a low carbon 18Cr-12Ni (304L) s
Publikováno v:
Materials Science and Engineering: A. 208:149-157
Creep tests of γ′ strengthened superalloy CMSX-4 single crystals of different orientations were performed at 950 °C, in both tension and compression at constant load (initial stress 250 MPa) as well as at constant stress (250 MPa). It was found t
Publikováno v:
Materials Science and Engineering: A. 205:50-58
The sigmoidal creep in a Cu16Al solid solution alloy at temperatures ranging from 689 K to 798 K is investigated. The ‘characteristic’ creep strain rates, i.e. the initial and maximum creep strain rates in the primary creep stage as well as mi
Publikováno v:
Scripta Materialia. 34:275-280
In some alloys, an isothermal transition from Alloy Class to Metal Class creep behavior in the course of primary creep is observed. This holds not only for some solid alloys, but also for some precipitation strengthened, particularly some commercial