Microstructural and Mechanical Characterization of As-Cast Co-Cr-Mo Alloys with Various Content of Carbon and Nitrogen

2020 ◽  
Vol 988 ◽  
pp. 206-211
Author(s):  
Alfirano ◽  
Purwaningtyas Agustini ◽  
Sumirat Iwan
Keyword(s):  
Tensile Test ◽  
Mechanical Characterization ◽  
Low Carbon ◽  
Phase Precipitation ◽  
Σ Phase ◽  
Biomedical Implant ◽  
Carbon And Nitrogen ◽  
Cast Alloys ◽  
Χ Phase

Co-Cr-Mo alloys is the material used as a biomedical implant in human body. This material is widely used because they have excellent in corrosion and wear resistance. In this study, microstructure and results of tensile test that were affected by carbon and nitrogen were investigated. The specimens of Co-Cr-Mo alloy were made by investment casting. The compositions of the alloys are Co-28Cr-6Mo-0.8(Si, Mn, Fe)-0,2Ni-(0.08-0.25)C-(0-0.2)N. After that process, microstructure of the alloys is characterized by, SEM/EDX and XRD testing using bulk and electrolytic extracted specimens. The mechanical properties were determined by tensile test. The precipitate content in as-cast alloys was higher when carbon and nitrogen was added. The main precipitate formed in the specimens with variations in carbon and nitrogen is M23X6 type, π-phase, χ-phase, and σ-phase. Carbon and nitrogen promoted M23X6 type and π-phase precipitation, respectively, meanwhile χ-phase was formed in the alloys with low carbon content. The addition of carbon and nitrogen shows an increased in yield strength, tensile strength and elongation of as-cast Co-28Cr-6Mo-0.8(Si, Mn, Fe)-0,2Ni-(0.08-0.25)C-(0-0.2)N alloys.

Mechanical characterization of impact resistance by pendulum tensile test on PETG and PA6 thermoplastics

2018 ◽  
Vol 11 (79) ◽  
pp. 3901-3910
Author(s):  
Milton F. Coba Salcedo ◽  
Carlos Acevedo Penaloza ◽  
Gustavo Guerrero Gomez
Keyword(s):  
Tensile Test ◽  
Mechanical Characterization ◽  
Impact Resistance

Comparison of the direct burst pressure and the ring tensile test methods for mechanical characterization of tissue-engineered vascular substitutes

2014 ◽  
Vol 34 ◽  
pp. 253-263 ◽  
Author(s):  
Véronique Laterreur ◽  
Jean Ruel ◽  
François A. Auger ◽  
Karine Vallières ◽  
Catherine Tremblay ◽  
...  
Keyword(s):  
Tensile Test ◽  
Mechanical Characterization ◽  
Test Methods ◽  
Burst Pressure

scholarly journals Experimental and numerical evaluation of resilience and toughness in AISI 1015 steel welded plates

2019 ◽  
pp. 62-75
Author(s):  
Pavel Michel Zaldivar-Almaguer ◽  
Roberto Andrés Estrada-Cingualbres ◽  
Roberto Pérez-Rodríguez ◽  
Arturo Molina-Gutiérrez
Keyword(s):  
Numerical Simulation ◽  
Tensile Test ◽  
Numerical Evaluation ◽  
Mechanical Characterization ◽  
Welded Joint ◽  
Strain Curve ◽  
Experimental Stress ◽  
Stress Strain Curve ◽  
Stress Strain

The mechanical characterization of the engineering materials is always a topic of interest to engineers and researchers. The objective of this work is to study the butt welded joint resilience and toughness by means of the tensile test and the numerical simulation. The specimens were fabricated by welding two plates of AISI 1015 steel with an E6013 electrode. An algorithm of the numerical integration based on the trapezoid method that allowed calculating the resilience and toughness as the area under the stress - strain curve was implemented. The algorithm was validated by comparing the numerical results of the resilience with those obtained by the analytical method. The results show that the resilience and the toughness values computed with the experimental stress - strain curve, they have correspondence with the same values calculated with the numerical simulation.

scholarly journals Metallurgical and Mechanical Characterization of Low Carbon Steel—Stainless Steel Dissimilar Joints Made by Laser Autogenous Welding

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 810
Author(s):  
Elena Scutelnicu ◽  
Mihaela Iordachescu ◽  
Carmen Catalina Rusu ◽  
Danut Mihailescu ◽  
José Luis Ocaña
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Mechanical Behavior ◽  
Mechanical Characterization ◽  
Low Carbon Steel ◽  
Image Correlation ◽  
Correlation Technique ◽  
Low Carbon ◽  
Dissimilar Joints

This paper addresses the metallurgical and mechanical characterization of dissimilar joints made by laser autogenous welding between thin sheets of low-carbon steel (CS) and austenitic stainless steel (SS). The welding technology applied, previously optimized to produce sound dissimilar joints, is based on the heat source displacement from the weld gap centerline towards CS, in order to reduce the SS overheating. The research includes optical microscopy observations, energy dispersive X-ray analysis (EDX) to assess the wt% of Cr, Ni, and Fe in all regions of the dissimilar welded joint, hardness measurements, and tensile tests of transverse-welded flat specimens. In comparison with classical determination of the joint overall mechanical characteristics, the novelty of this research consists of experimental assessment of the local mechanical behavior of the fusion and heat affected zones by using a digital image correlation technique (VIC-2D). This is an efficient tool for determining the constitutive properties of the joint, useful for modelling the mechanical behavior of materials and for verifying the engineering predictions. The results show that the positive difference in yielding between the weld metal and the base materials protects the joint from being plastically deformed. As a consequence, the tensile loading of flat transverse specimens generates the strain localization and failure in CS, far away from the weld.

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