FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3093144190> ?p ?o ?g. }

• W3093144190 abstract "Author(s): Yazdani, Arash | Advisor(s): Graeve, Olivia | Abstract: In the first part of this research, we developed a differential scanning calorimetry method for calculating the initial crystallinity, change of crystallinity and crystallinity percentage of amorphous metal alloys as a function of temperature. Using thermodynamic enthalpies of amorphous, crystalline and partially devitrified specimens, our methodology can determine crystallinity percentages as low as a few percent. This technique also eliminates the need for expensive in situ accessories, such as those required in electron microscopy. In the second part, we report the effect of crystallinity percentage on the compressive deformation response of partially devitrified in situ Fe-based bulk metallic glass matrix composites (SAM25-Dev), consisting of an amorphous matrix and evenly dispersed nanocrystals (BCC iron, carbides, and borides) of sizes smaller than 20 nm. The SAM25-Dev specimens were obtained by consolidating SAM25 powders using the spark plasma sintering technique. The crystallinity percentage of the sintered samples varied between 20% and 61% depending on the sintering temperature. Macroscopically, bulk samples tested under compression exhibited an ~8% elastic deformation, which is significantly higher than elastic strains of other Fe-based bulk metallic glass composites, and strengths of ~2 GPa at fracture. Indentation toughness of the samples was below 1.6 MPa•m0.5, which categorizes the material as a brittle composite. Compression tests on micro-pillars resulted in specimen failure from the propagation of one principle shear band. Here, yield strength was corrected for the effect of taper angle of the micro-pillars and values above 5 GPa were obtained, making the material an ultra-hard composite. Such a high strength is attributed to the extremely small Poisson’s ratio (l 0.1) and higher glass transition temperature (883 K) of this material Both the compressive strength and fracture toughness of the specimens were negligibly dependent on the crystallinity percentage, implying that the radii of the plastic zones at the crack tips are smaller than the distance between nanocrystals on the specimens. Moreover, we find that SAM25-Dev shows a very high sample size dependency of strength (above 200%), which indicates a significant defect sensitivity. As a result, the residual porosity despite being minimal, strongly deteriorates the strength of the materials." @default.
• W3093144190 created "2020-10-22" @default.
• W3093144190 creator A5026854555 @default.
• W3093144190 date "2020-01-01" @default.
• W3093144190 modified "2023-09-23" @default.
• W3093144190 title "Structural analysis and mechanical properties of amorphous steel composites" @default.
• W3093144190 hasPublicationYear "2020" @default.
• W3093144190 type Work @default.
• W3093144190 sameAs 3093144190 @default.
• W3093144190 citedByCount "0" @default.
• W3093144190 crossrefType "journal-article" @default.
• W3093144190 hasAuthorship W3093144190A5026854555 @default.
• W3093144190 hasConcept C104779481 @default.
• W3093144190 hasConcept C121332964 @default.
• W3093144190 hasConcept C123266363 @default.
• W3093144190 hasConcept C136478896 @default.
• W3093144190 hasConcept C159985019 @default.
• W3093144190 hasConcept C185592680 @default.
• W3093144190 hasConcept C192562407 @default.
• W3093144190 hasConcept C2776014600 @default.
• W3093144190 hasConcept C2777581544 @default.
• W3093144190 hasConcept C2780026712 @default.
• W3093144190 hasConcept C2780902562 @default.
• W3093144190 hasConcept C39519442 @default.
• W3093144190 hasConcept C46275449 @default.
• W3093144190 hasConcept C56052488 @default.
• W3093144190 hasConcept C8010536 @default.
• W3093144190 hasConcept C97355855 @default.
• W3093144190 hasConceptScore W3093144190C104779481 @default.
• W3093144190 hasConceptScore W3093144190C121332964 @default.
• W3093144190 hasConceptScore W3093144190C123266363 @default.
• W3093144190 hasConceptScore W3093144190C136478896 @default.
• W3093144190 hasConceptScore W3093144190C159985019 @default.
• W3093144190 hasConceptScore W3093144190C185592680 @default.
• W3093144190 hasConceptScore W3093144190C192562407 @default.
• W3093144190 hasConceptScore W3093144190C2776014600 @default.
• W3093144190 hasConceptScore W3093144190C2777581544 @default.
• W3093144190 hasConceptScore W3093144190C2780026712 @default.
• W3093144190 hasConceptScore W3093144190C2780902562 @default.
• W3093144190 hasConceptScore W3093144190C39519442 @default.
• W3093144190 hasConceptScore W3093144190C46275449 @default.
• W3093144190 hasConceptScore W3093144190C56052488 @default.
• W3093144190 hasConceptScore W3093144190C8010536 @default.
• W3093144190 hasConceptScore W3093144190C97355855 @default.
• W3093144190 hasLocation W30931441901 @default.
• W3093144190 hasOpenAccess W3093144190 @default.
• W3093144190 hasPrimaryLocation W30931441901 @default.
• W3093144190 hasRelatedWork W1840890948 @default.
• W3093144190 hasRelatedWork W1970401787 @default.
• W3093144190 hasRelatedWork W1982715441 @default.
• W3093144190 hasRelatedWork W2017023420 @default.
• W3093144190 hasRelatedWork W2044885697 @default.
• W3093144190 hasRelatedWork W2046451406 @default.
• W3093144190 hasRelatedWork W2059225245 @default.
• W3093144190 hasRelatedWork W2066389405 @default.
• W3093144190 hasRelatedWork W2081242192 @default.
• W3093144190 hasRelatedWork W2089752549 @default.
• W3093144190 hasRelatedWork W2109326972 @default.
• W3093144190 hasRelatedWork W2198385712 @default.
• W3093144190 hasRelatedWork W2365924687 @default.
• W3093144190 hasRelatedWork W2375332272 @default.
• W3093144190 hasRelatedWork W2564000887 @default.
• W3093144190 hasRelatedWork W2803507016 @default.
• W3093144190 hasRelatedWork W2912196422 @default.
• W3093144190 hasRelatedWork W3025114183 @default.
• W3093144190 hasRelatedWork W3039082588 @default.
• W3093144190 hasRelatedWork W3191548474 @default.
• W3093144190 isParatext "false" @default.
• W3093144190 isRetracted "false" @default.
• W3093144190 magId "3093144190" @default.
• W3093144190 workType "article" @default.