Zobrazeno 1 - 10
of 12
pro vyhledávání: '"L. N. Leshchiner"'
Publikováno v:
Metal Science and Heat Treatment. 36:604-608
Tests of specimens of Al-Cu-Li alloys have shown that fatigue cracks in these materials sometimes grow in directions different from the applied load. This article examines the effect of different stages of aging on the rate of fatigue-crack growth (F
Autor:
L. N. Leshchiner, A. D. Petrov, A. A. Armyagov, T. R. Barbanel, G. S. Neshpor, N. M. Shcheglova
Publikováno v:
Metal Science and Heat Treatment. 33:402-406
Autor:
L. N. Leshchiner, T. P. Fedorenko
Publikováno v:
Metal Science and Heat Treatment. 33:406-411
Publikováno v:
Metal Science and Heat Treatment. 32:787-790
1. Slabs of alloy 1440 after aging by both schedules are better than slabs of alloy 1163 with respect to low-cycle fatigue by 20–50%, and also with respect to fatigue crack growth rate with low stress intensity factors. 2. Alloy 1440 with reduced d
Publikováno v:
Metal Science and Heat Treatment. 37:62-64
The new, deformable alloy 1441 (system Al - Cu - Mg - Li - Zr) has a lower density (by 6.8%) and a higher elasticity modulus (by 12%) than alloy 1163 (3.8 - 4.5% Cu, 1.2 - 1.6% Mg, 0.4 - 0.8% Mn, and Al), and a longer service life for comparable stre
Publikováno v:
Metal Science and Heat Treatment. 35:229-231
Autor:
T. P. Fedorenko, L. N. Leshchiner
Publikováno v:
Metal Science and Heat Treatment. 24:187-190
1. The optimal combination of fracture toughness, fatigue limit, and strength characteristics of D16 alloys can be obtained from semifinished products with a primarily unrecrystallized structure and with the copper and magnesium concentrations near t
Publikováno v:
Metal Science and Heat Treatment. 29:783-786
1. An increase of the volume fraction of particles of excess phase from 1 to 2.7\2-3.5% leads to a decrease of Kcy by 5\2-10% and an increase of the growth rate of the fatigue crack by a factor of 1.5\2-2 for \gDK=850\2-1000 N/mm3/2. When the volume
Publikováno v:
Metal Science and Heat Treatment. 16:386-390
1. With increasing ultimate strength, yield strength, electrical conductivity, decreasing elongation, stress corrosion resistance, and changes in the rate of strain hardening in passing from zone aging to phase aging the quantity of θ″ phase in th
Autor:
L. N. Leshchiner
Publikováno v:
Metal Science and Heat Treatment. 13:362-365
We propose new aging conditions for alloy AK6: artificial zone aging at 90°C for 3–5 h and artificial phase aging at 175°C for ∼6 h.