Research on the dislocation differences of CoCrFeMnNi with different local chemical orders during room temperature tensile test

2021 ◽  
Vol 868 ◽  
pp. 159215
Author(s):  
Shuai Guo ◽  
Hui Chen ◽  
Meng Wang
Keyword(s):  
Tensile Test ◽  
Room Temperature ◽  
Room Temperature Tensile Test

Microstructure and Mechanical Properties of As-Cast and As-Extruded Mg-Gd-Er-Zn-Zr Alloy

2015 ◽  
Vol 1088 ◽  
pp. 221-226 ◽  
Author(s):  
Kai Wen ◽  
Wen Bo Du ◽  
Ke Liu ◽  
Zhao Hui Wang ◽  
Shu Bo Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Room Temperature ◽  
Cast Alloy ◽  
Extrusion Direction ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Microstructure And Mechanical Properties ◽  
Room Temperature Tensile Test ◽  
Zr Alloy

The Microstructure and mechanical properties of as-cast and as-extruded Mg-12Gd-2Er-1Zn-0.6Zr alloy are investigated in the present paper. The microstructure is analyzed by OM, SEM and TEM with SAED, and the mechanical properties are valued by the room temperature tensile test. The result shows that the coarse Mg5(Gd, Er, Zn) phase in the as-cast alloy was broken during hot extrusion process, and it was distributed at the grain boundary along the extrusion direction. The enhancement in mechanical properties of the extruded alloy is mainly ascribed to the refinement of these grains. The sizes of dynamical recrystallized grains are homogeneously, which was about 7 μm. Stacking fault existed in the as-cast alloy, which has a little effect on the dynamic recrystallization because of its tiny thicknesses.

Effect of Cobalt Addition on the Deformation and Recrystallization Textures of Polycrystalline IN713C Nickel Based Superalloy

2014 ◽  
Vol 922 ◽  
pp. 711-715 ◽  
Author(s):  
J.Y. Song ◽  
Shigeo Sato ◽  
Yuichiro Koizumi ◽  
Akihiko Chiba
Keyword(s):  
Tensile Test ◽  
Room Temperature ◽  
Nucleation Site ◽  
Nickel Base Superalloy ◽  
Recrystallization Behavior ◽  
Nickel Based Superalloy ◽  
Nickel Base ◽  
Inconel 713C ◽  
Cobalt Addition ◽  
Room Temperature Tensile Test

The aim of this study was to examine the effect of cobalt addition on the deformation and recrystallization behavior. The prepared material was Inconel 713C nickel base superalloy. In order to improve the deformability, the IN713C was modified by cobalt addition with 5 and 10wt%. Mechanical property was determined by room temperature tensile test with the strain rate of 10-3s-1.The recrystallization was performed at 1473K for 300sec followed by oil quenching. The final microstructure becomes homogeneous through cobalt addition. Strength and work hardening rate were decreased during room temperature tensile test. By contrast, elongation was increased. Nucleation site was changed by cobalt addition. It was found that kinetics of recrystallization is dependent of the cobalt addition. The cobalt addition is attributed with ductility and recrystallization behavior and the latter is related to change of deformation behavior.

Atomic simulation of mechanical properties of irradiated iron

2019 ◽  
Vol 31 (02) ◽  
pp. 2050027
Author(s):  
Lei Ma ◽  
Changsheng Li ◽  
Ailong Zhang ◽  
Wangyu Hu
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Tensile Test ◽  
Room Temperature ◽  
Stacking Faults ◽  
Dynamics Simulation ◽  
Stress And Strain ◽  
Micro Structure ◽  
Atomic Simulation

The mechanical properties of irradiated iron are studied by molecular dynamics simulation. The initial models are irradiated with the energy of primary knocked-on atoms (PKA) of 10[Formula: see text]keV at 100, 300, 500 and 600 K, and then all the irradiated models are subjected to tensile test. The results reveal that the mechanical properties of irradiated iron are changed compared with un-irradiated iron, the yield stress and strain decrease after irradiation, and the irradiation causes the hardening of micro-structure at low temperature and high temperature, but it results in the softening of structure at room temperature. The plastic reduces for irradiated iron under tensile test, more stacking faults are formed in the crystal structure as the temperature increases.

The Effect of Trans-Polyoctylene Rubber (TOR) as Compatibilizer on Recycled Nitrile Glove (NBRr) Filled Natural Rubber Compound: Tensile Test and Morphology Studies

2014 ◽  
Vol 679 ◽  
pp. 305-310
Author(s):  
M.H. Fatin ◽  
N.Z. Noimam ◽  
S.T. Sam ◽  
M.Z. Salihin ◽  
Z. Norhafizah ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Tensile Test ◽  
Room Temperature ◽  
Rubber Compound ◽  
Surface Fracture ◽  
Elongation At Break ◽  
Roll Mill ◽  
Fine Size ◽  
Tensile Surface ◽  
Scanning Electron

Tensile test and morphology studies were performed to determine the influences of Trans-polyoctylene Rubber (TOR) as compatibilizer of NBRr filled ENR 50 with composition of 15 phr. Fine size (300μm-700μm) of NBRr was used as fillers. Both uncompatibilized and compatibilized NBRr/ENR 50 were prepared using two roll mill at room temperature with different php of 1.0, 1.5, 2.0, 2.5 and 3.0. It can be observed that tensile strength and modulus of elasticity were decreased as increased in TOR loading before started to increased at 1.5 up to 3.0. Meanwhile, the increment in the value of elongation at break when increased in the addition of TOR. The scanning electron microscopy (SEM) of the tensile surface fracture of increased TOR loading illustrated a better adhesion and dispersion in comparison of low amount of TOR loading.

Studies on Hydrogen Embrittlement of Ti-2Al-2.5Zr Alloy

2009 ◽  
Vol 618-619 ◽  
pp. 101-104
Author(s):  
Li Wang ◽  
Qiang Luo ◽  
Yan Zhang Liu ◽  
Yong Chen ◽  
Dan Qi Sun
Keyword(s):  
Hydrogen Embrittlement ◽  
Tensile Test ◽  
Strain Rate ◽  
Immersion Time ◽  
Room Temperature ◽  
Immersion Test ◽  
Slow Strain Rate Test ◽  
Face Centered Cubic ◽  
Rate Test ◽  
Face Centered

Abstract The effects of hydrogen on the hydrogen embrittlement of Ti-2Al-2.5Zr alloy was investigated by tensile test, slow strain rate test (SSRT), and the amount of absorbed hydrogen of Ti-2Al-2.5Zr alloy was studied by immersion test in alkaline steam water at a pressure of 8.5MPa. The results indicated that the hydrides(TiH2) in Ti-2Al-2.5Zr alloy formed as platelets and were identified as face-centered cubic δ-hydride. At room temperature, hydrogen and formed hydrides induced increase of the intensity and caused loss in the ductility. In alkaline steam water at a pressure of 8.5MPa, the hydrogen embrittlement susceptibility index (IHE) of Ti-2Al-2.5Zr alloy increased with increasing hydrogen content, and the IHE value of the alloy with 350ppm H was less than 0.1. Moreover the amount of absorbed hydrogen of Ti-2Al-2.5Zr alloy increased with increasing of immersion time, and absorbed hydrogen was still less than 50ppmH even when immersion time reached 13000h.

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