scholarly journals EFFECT OF DEGREE OF SATURATION OF A TERMINAL SOLID SOLUTION ON SUSCEPTIBILITY TO PLASTIC INSTABILITY IN PURE SHEAR. Annual Report, Part II.

1972 ◽  
Author(s):  
A. K. Chakrabarti ◽  
J. W. Spretnak
Keyword(s):  
Solid Solution ◽  
Annual Report ◽  
Terminal Solid Solution ◽  
Pure Shear ◽  
Plastic Instability ◽  
Degree Of Saturation

scholarly journals [PLASTIC INSTABILITY IN PURE SHEAR]. Annual Report, Part III.

1972 ◽  
Author(s):  
A. K. Chakrabarti ◽  
E. N.C. Dalder ◽  
D. Hauser ◽  
D. L. McGarry ◽  
V. J. Russo ◽  
...  
Keyword(s):  
Annual Report ◽  
Pure Shear ◽  
Plastic Instability

Synthesis of azeotropic and two terminal solid solution type binary diagrams

Calphad ◽  
1979 ◽  
Vol 3 (2) ◽  
pp. 109-118 ◽  
Author(s):  
S.S. Balakrishna ◽  
A.K. Mallik
Keyword(s):  
Solid Solution ◽  
Terminal Solid Solution ◽  
Solution Type

scholarly journals Experimental Investigation of the Phase Equilibria in the Al-Mn-Zn System at 400°C

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Tian Wang ◽  
Dmytro Kevorkov ◽  
Ahmad Mostafa ◽  
Mamoun Medraj
Keyword(s):  
Solid Solution ◽  
Ternary System ◽  
Terminal Solid Solution ◽  
Stoichiometric Compound ◽  
Diffusion Couples ◽  
Ternary Compounds ◽  
Ternary Solubility ◽  
Limited Solid Solubility ◽  
Binary Compounds ◽  
Phase Relationships

Al-Mn-Zn ternary system is experimentally investigated at 400°C using diffusion couples and key alloys. Phase relationships and homogeneity ranges are determined for binary and ternary compounds using EPMA, SEM/EDS, and XRD. Reported ternary compound T3 (Al11Mn3Zn2) is confirmed in this study and is denoted as τ2 in this paper. Two new ternary compounds (τ1 and τ3) are observed in this system at 400°C. τ1 is determined as a stoichiometric compound with the composition of Al31Mn8Zn11. τ3 has been found to have homogeneity range of AlxMnyZnz (x=9–13 at%; y=11–15 at%; z=75–77 at%). The binary compounds Al4Mn and Al11Mn4 exhibit limited solid solubility of around 6 at% and 4 at% Zn, respectively. Terminal solid solution Al8Mn5 is found to have maximum ternary solubility of about 10 at% Zn. In addition, ternary solubility of Al-rich β-Mn′ at 400°C is determined as 4 at% Zn. Zn-rich β-Mn′′ has a ternary solubility of 3 at% Al. The solubility of Al in Mn5Zn21 is measured as 5 at%. Based on the current experimental results, the isothermal section of Al-Mn-Zn ternary system at 400°C has been constructed.

scholarly journals Effect of Melt Overheating on Structure and Mechanical Properties of Al-Mg-Si Cast Alloy

Metals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1353
Author(s):  
Vladislav Deev ◽  
Evgeny Prusov ◽  
Ernst Ri ◽  
Olga Prihodko ◽  
Svetlana Smetanyuk ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Crystallization Process ◽  
Cast Alloy ◽  
Degree Of Saturation ◽  
Structural Components ◽  
Pouring Temperature ◽  
Aluminum Solid Solution ◽  
Fast Cooling ◽  
Average Size

The paper discusses the complex effect of melt overheating with subsequent fast cooling down to the pouring temperature on the crystallization process, microstructure and mechanical properties of Al-Mg-Si aluminum alloy. The results obtained facilitated the establishment of rational modes of melt overheating, leading to a significant change in the dispersion and morphology of structural components. In particular, with an increase in the melt overheating temperature to 900 °C with holding and subsequent rapid cooling to the casting temperature, a decrease in the average size of dendritic cells of the aluminum solid solution from 39 μm to 13 μm was observed. We also noticed the refinement of eutectic inclusions of the Mg2Si phase with compact morphology. An increased level of mechanical properties was noted; the maximum values of tensile strength and elongation reached 228 MPa and 5.24%, respectively, which exceeded the initial values by 22.5% and 52.3%, correspondingly. The microhardness of the aluminum solid solution sequentially increased from 38.21 to 56.5 HV with an increase in the temperature during melt overheating. According to the EDS linear scanning, an increase in the superheat temperature of the melt is accompanied by an increase in the degree of saturation of the solid solution with magnesium.

Correlation of the Crystal Structural and Microstructural Effects of the Interfacial Processes Between Gold and GaAs

1981 ◽  
Vol 10 ◽  
Author(s):  
Xian-Fu Zeng ◽  
D. D. L. Chung
Keyword(s):  
Solid Solution ◽  
Terminal Solid Solution ◽  
Small Surface ◽  
Interfacial Processes ◽  
Β Phase ◽  
Α Phase ◽  
Microstructural Effects ◽  
Crystal Structural ◽  
High Cooling Rates ◽  
Sharp Corners

The solid state interfacial reaction between gold and GaAs, was found to result in small surface microstructural changes, whereas melting of the reaction product (tentatively identified as AuGa) and subsequent solidification to form the β phase resulted in aligned rectangular protrusions with sharp corners. The rectangular protrusions were found to be much finer in scale after heating in a vacuum than after heating in argon at 1 atm. High cooling rates (e.g. 40°C min−1) during solidification resulted in the formation of both rectangular protrusions and irregularly shaped protrusions with jagged boundaries and topography. The irregular protrusions were associated with a phase tentatively identified as Au2Ga. Rapid cooling at about 600°C min−1 during solidification resulted in the formation of the gold-rich terminal solid solution (α phase) which appeared as aligned rectangular protrusions with rounded corners.

scholarly journals Effect of the Triaxiality in Plane Stress Conditions. Triaxiality Effect in a PVC Material

2013 ◽  
Vol 3 (1) ◽  
pp. 373-380
Author(s):  
N. Selini ◽  
M. Elmeguenni ◽  
M. Benguediab
Keyword(s):  
Pure Shear ◽  
Stress Triaxiality ◽  
Volumetric Strain ◽  
Experimental Tests ◽  
Plastic Instability ◽  
Pressure Vessels ◽  
Polymer Materials ◽  
Plastic Behavior ◽  
Anisotropic Plastic ◽  
Plastic Volumetric Strain

Polymer materials are gaining more and more importance in engineering applications. A new methodology of analysis is required in order to assess the capability of such material in withstanding complex loads. Therefore, the behavior of these materials currently arouses a great research interest. The use of PVC plastic pipes in pressure vessels and pipelines has increased rapidly in the last decade. In order to determine the plastic behavior of PVC, an experimental method is presented. Through the results obtained from experimental tests, in the first part of this paper, we investigate the use of a phenomenological model proposed by G’Sell and Jonas. The true stress-strain response under large plastic deformation was investigated in different stress triaxiality frameworks. Particular attention was given to volumetric strain evolution, separation resulting from elastic volumetric strain, plastic volumetric strain and pure shear. The effect of stress triaxiality on plastic instability and fracture strain was also examined. The deformation process should be considered as explained, and the anisotropic plastic response induced by the deformation could be introduced in constitutive equations of G’Sell.

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