Results 61 to 70 of about 429,298 (302)

Loading Surface in the Course of Mechanical- Thermal Treatment and Steady-State Creep of Metals [PDF]

open access: yes, 2013
: Kinetics of the loading surface of a material gives precious information on the level of the hardening of the material. This paper is concerned with the evolution of the loading surface during successive actions, such as: (i) plastic deformation, (ii)
Ruszinkó, Endre
core  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Effects of the Unified Viscoplastic Formulation and Temperature Terms on the Thermomechanical Behavior of Soldering Materials [PDF]

open access: yes, 2012
Solder materials are critical packaging compounds and due to usually weakest melting temperature among packaging constitutive materials, thus, they are frequently subjected to a multitude of physical phenomena: creep, fatigue and combined hardening ...
Alexis, Joël   +3 more
core   +2 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Thermal Deformation Behavior of 690 MPa High-Strength Steel for Ocean Engineering at 1 000 ~ 1100 ℃

open access: yesTeshugang, 2015
The thermal deformation behavior of 420 mm casting slab of 690 MPa high-strength steel for ocean engineering (/% :0. 12 〜0. 15C,1.05 ~ 1.20Mn,0.5 ~0. 7Cr, 1. 0 ~ 2.0Ni,0. 5 ~0. 6Mo,0. 3 ~0. 6Cu,0.015 〜0.035Nb, 0. 008 〜0. 020Ti ,0. 04 ~0.
帅勇, 孙乐飞, 陈英俊
doaj  

Anomalous Thermal Response of Graphene Kirigami Induced by Tailored Shape to Uniaxial Tensile Strain: A Molecular Dynamics Study

open access: yesNanomaterials, 2020
The mechanical and thermal properties of graphene kirigami are strongly dependent on the tailoring structures. Here, thermal conductivity of three typical graphene kirigami structures, including square kirigami graphene, reentrant hexagonal honeycomb ...
Hui Li   +3 more
doaj   +1 more source

Constraints on the spacetime geometry around 10 stellar-mass black hole candidates from the disk's thermal spectrum

open access: yes, 2014
In a previous paper, one of us has described a code to compute the thermal spectrum of geometrically thin and optically thick accretion disks around generic stationary and axisymmetric black holes, which are not necessarily of the Kerr type.
Bambi, Cosimo, Kong, Lingyao, Li, Zilong
core   +1 more source

Mechanisms of High Temperature Degradation of Thermal Barrier Coatings. [PDF]

open access: yes, 2009
Thermal barrier coatings (TBCs) are crucial for increasing the turbine inlet temperature (and hence efficiency) of gas turbine engines. The thesis describes PhD research aimed at improving understanding of the thermal cycling failure mechanisms of ...
Wu, Rudder T.C., Wu, Rudder T.C.
core   +1 more source

Periodic Thermal Deformation of Large Seal Ring

open access: yesJSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing, 1994
Oil film seals of large diameter sometimes show long-period cyclic deformation of the floating seal ring whose rotation is constrained by a stopper pin. Cyclic change of deformation and oil film temperature may cause fatigue damage of the seal ring after long-term operation. We present a theory for the mechanisms of thermal deformation and its periodic
Norio Oishi, Masato Tanaka
openaire   +3 more sources

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani   +2 more
wiley   +1 more source

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