Anelastic relaxation controlled cyclic creep and cyclic stress rupture behavior of an oxide dispersion strengthened alloy

Static and cyclic creep behavior of in situTiB2 particulate reinforced aluminum composite

“…(10)]. 40 Matejczyk et al 41 suggested that the frequency dependence of cyclic creep deceleration is related to the time constant of the anelastic relaxation. Figure 5 indicates that the magnitude of the cyclic creep retardation is independent of loading frequency.…”

Cyclic creep behaviour and strain classification of a bainite 2.25Cr-1Mo steel at 455oC

“…This part of the micro-plastic strain ε an v under the low-stress region is regarded as the major anelastic recovery in case with long duration under valley stress. 13 The two parts of anelastic recovery strain indicate the existence of a two-stage spring-back phenomenon when the applied stress is removed, which is closely related to the change of elastic modulus 46 and the movement of dislocations. 47 The above values of strain can be obtained from experimental data, and the relationships are presented as the following:…”

“…11 Similar performances can be found in some nickel-based alloy such as GH720Li alloy 12 and MA754 alloy. 13 However, research on the cyclic creep response of a nickel-based super alloy DZ125 under different gradients of stress amplitudes and temperatures showed that cyclic creep led to accelerate the strain accumulation compared with static creep, and the ratcheting fatigue rate was reported to be the upper rate of the cyclic creep, even if the duration under peak stress was as long as 240 minutes. 14 Cases where fatigue damage dominates could also be found on pure metal copper 15 and AMg6 alloy.…”

Meetings Calendar

“…November [6][7][8][9]1983: 1983 TMS-AIME Fall Meeting for Extractive and Process Metallurgy: International Sulfide Smelting Symposium; Westin St. Francis Hotel, San Francisco, California. The symposium will cover the following major areas: commercial sulfide smelting operations; sulfide smelting technology development including bench and pilot plant operations; smelter facilities and maintenance; by-products and gas treatment; fundamental aspects, basic research, and laboratory investigation; process economics; and environmental control For further information, contact H.Y. Sohn, General Meeting Chairman, Department of Metallurgy and Metallurgical Engineering, University of Utah, Salt Lake City.…”