Cyclic deformation behaviour of Ni3Ge single crystals at room temperature

1986 ◽  
Vol 53 (6) ◽  
pp. 887-896 ◽  
Author(s):  
Han-Ryong Pak ◽  
Lieh-Ming Hsiung ◽  
Masaharu Kato
Keyword(s):  
Single Crystals ◽  
Cyclic Deformation ◽  
Room Temperature ◽  
Deformation Behaviour

scholarly journals Axial-torsional fatigue and cyclic deformation of 304L stainless steel at room temperature

2019 ◽  
Vol 300 ◽  
pp. 08004
Author(s):  
Cainã Bemfica ◽  
Edgar Mamiya ◽  
Fábio Castro
Keyword(s):  
Stainless Steel ◽  
Cyclic Deformation ◽  
Room Temperature ◽  
Axial Stress ◽  
Deformation Behaviour ◽  
Hysteresis Loops ◽  
Secondary Hardening ◽  
304L Stainless Steel ◽  
Proportional Loading ◽  
Torsional Fatigue

This work investigates the axial-torsional fatigue and cyclic deformation behaviour of 304L stainless steel at room temperature. Four fully reversed strain-controlled loading paths (axial, torsional, proportional axial-torsional, and 90º out-of-phase axial-torsional) and a fully-reversed shear strain-controlled with static axial stress loading were investigated. For axial, torsional, torsional with static stress and few proportional experiments, an initial cyclic softening was followed by secondary hardening related to martensitic transformation. Secondary hardening was not observed for non-proportional loading nor for some proportional experiments. The influence of the non-stabilized cyclic deformation behaviour on the fatigue life estimates of two multiaxial critical plane fatigue models (Smith–Watson–Topper and Fatemi–Socie) was investigated. Life estimates based on the stress-strain hysteresis loops corresponding to the maximum softening and to the half-life were similar for the two models.

Experimental Observation on the Uniaxial Cyclic Deformation Behaviour of TA16 Titanium Alloy

2011 ◽  
Vol 415-417 ◽  
pp. 2318-2321 ◽  
Author(s):  
Qian Hua Kan ◽  
Wen Yi Yan ◽  
Guo Zheng Kang ◽  
Su Juan Guo
Keyword(s):  
Titanium Alloy ◽  
Cyclic Loading ◽  
Cyclic Deformation ◽  
Room Temperature ◽  
Stress Ratio ◽  
Stress Amplitude ◽  
Deformation Behaviour ◽  
Ratcheting Strain ◽  
Number Of Cycles ◽  
Stable Material

The cyclic deformation including the ratcheting of TA16 titanium alloy was investigated experimentally at room temperature. Experimental results under symmetrical strain-controlled cyclic loading with various strain amplitudes show that the responded stress amplitude keeps almost unchanged with the increasing number of cycles. It is concluded that TA16 titanium alloy can be regarded as a cyclic stable material. Remarkable ratcheting was also observed under asymmetrical stress-controlled cyclic loading, i.e., ratcheting strain increases with the increasing number of cycles. The ratcheting strain strongly depends on the stress level and increases with the increase of applied mean stress, stress amplitude and stress ratio. These findings are useful to reasonably model the cyclic deformation of TA16 titanium alloy.

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