Effects of grain size on room temperature deformation behavior of Zn–22Al alloy under uniaxial and biaxial loading conditions

2016 ◽  
Vol 672 ◽  
pp. 78-87 ◽  
Author(s):  
M.E. Cetin ◽  
M. Demirtas ◽  
H. Sofuoglu ◽  
Ö.N. Cora ◽  
G. Purcek
Keyword(s):  
Grain Size ◽  
Deformation Behavior ◽  
Room Temperature ◽  
Biaxial Loading ◽  
Temperature Deformation ◽  
Loading Conditions ◽  
Uniaxial And Biaxial Loading

Room Temperature Deformation Behavior of Inconel718

2005 ◽  
Vol 475-479 ◽  
pp. 677-680 ◽  
Author(s):  
Fang Bian ◽  
Guoyue Su ◽  
Fan Ya Kong ◽  
Ke Yang
Keyword(s):  
Grain Size ◽  
Deformation Behavior ◽  
Room Temperature ◽  
Tensile Tests ◽  
True Stress ◽  
Temperature Deformation ◽  
Stress Strain ◽  
Limit Value ◽  
Heat Treated ◽  
Work Hardening Rate

The deformation behavior of Inconel718 at room temperature was studied by tensile tests. Three kinds of specimens were tested, including cold rolled, heat treated with grain size ASTM5 and heat treated with grain size ASTM7. The true stress-strain curves were obtained based on the tensile test records. The true stress-strain relation can express the room temperature deformation behavior, which can be described by equations similar to the Voce equation. The limit value of the work-hardening rate θ0 is very sensitive to the microstructure of the alloy.

Extensive deformation behavior of an all-oxide Al2O3-TiO2 nanostructured multilayer ceramic at room temperature

2009 ◽  
Vol 24 (11) ◽  
pp. 3387-3396 ◽  
Author(s):  
Arcan F. Dericioglu ◽  
Y.F. Liu ◽  
Yutaka Kagawa
Keyword(s):  
Cross Sections ◽  
Deformation Behavior ◽  
Room Temperature ◽  
Temperature Deformation ◽  
Relative Movement ◽  
Element Simulation ◽  
Columnar Grains ◽  
Multilayer Ceramic ◽  
Extensive Deformation ◽  
Indentation Response

An all-oxide Al2O3-TiO2 ceramic multilayer composed of 10–100 nm thick alternating layers was fabricated using the reactive magnetron sputtering process. Microindentation tests were carried out on the multilayer ceramic followed by microstructural observations of the cross-sections of the indented sites to characterize the indentation response of the system. During the observations, it was noted that an extensive room temperature “deformation” occurred in the multilayer ceramic material. The material shows a thickness reduction of as much as ∼40% under a conical indenter at 300 mN of load without microcracking and dislocation-assisted deformation. The room temperature deformation mechanism is governed by the relative movement and rearrangement of the anisotropic nanoscale columnar grains along the intergranular boundaries containing elongated voids. The relative sliding along the intergranular boundaries, and the subsequent granular rotation under indentation were well captured by finite element simulation.

scholarly journals Effect of Annealing on Structure and Mechanical Behavior of an AA2139 Alloy

2014 ◽  
Vol 783-786 ◽  
pp. 258-263 ◽  
Author(s):  
Damir Tagirov ◽  
Daria Zhemchuzhnikova ◽  
Marat Gazizov ◽  
Rustam Kaibyshev
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Flow Stress ◽  
Room Temperature ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Aged Alloy ◽  
Coarse Particles ◽  
Initial Material ◽  
High Ductility

An AA2139 alloy with a chemical composition of Al–4.35Cu-0.46%Mg–0.63Ag-0.36Mn–0.12Ti (in wt.%) and an initial grain size of about 155 μm was subjected to annealing at 430°C for 3 h followed by furnace cooling. This treatment resulted in the formation of a dispersion of coarse particles having essentially plate-like shape. The over-aged alloy exhibits lower flow stress and high ductility in comparison with initial material in the temperature interval 20-450°C. Examination of microstructural evolution during high-temperature deformation showed localization of plastic flow in vicinity of coarse particles. Over-aging leads to transition from ductile-brittle fracture to ductile and very homogeneous ductile fracture at room temperature.

Microstress distribution in graphite fibre/epoxy composites containing an elastomeric interphase: response to uniaxial and biaxial loading conditions

Composites ◽  
1995 ◽  
Vol 26 (4) ◽  
pp. 269-280 ◽  
Author(s):  
Steven D. Gardner ◽  
Charles U. Pittman ◽  
Tao C. Chang ◽  
Boon Y. Low ◽  
Robert M. Hackett
Keyword(s):  
Biaxial Loading ◽  
Epoxy Composites ◽  
Loading Conditions ◽  
Graphite Fibre ◽  
Uniaxial And Biaxial Loading
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