{"id":{"repo_id":"greece","oai_identifier":"oai:10442/0479"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/0479","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΔΟΜΗ ΚΑΙ ΔΙΑΒΡΩΤΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΚΡΑΜΑΤΩΝ ΑΛΟΥΜΙΝΙΟΥ-ΧΑΛΚΟΥ-ΜΑΓΓΑΝΙΟΥ ΓΡΗΓΟΡΑ ΣΤΕΡΕΟΠΟΙΗΜΕΝΩΝ","abstract":"AL-4.5 NT% CU-2.0 NT% MN ALLOY SPECIMENS WAS SOLIDIFIED AT VARIOUS COOLING RATES. A SET OF THESE ALLOYS WAS HEAT-TREATED. THE RESULTING MICROSTRUCTURES WERE STUDIED BY OPTICAL MICROSCOPY, TRANSMISSION AND SCANNING TRANSMISSION ELECTRON MICROSCOPIES AND X-RAY DIFFRACTION ANALYSIS. THE EQUILIBRIUM PHASES, AL6MN AND AL2CU FOUND IN THE CONVENTIONALLY SOLIDIFIED ALLOYS WERE NOT OBSERVED IN THE RAPIDLY SOLIDIFIED (AS-SPUN) ALLOY. INSTEAD THE TERNARY COMPOUND AL2OCU2MN3 AND A-AL SOLID SOLUTION WERE EXCLUSIVELY PRESENT. THE STABILITY OF THE AL-4.5 NT% CU-2.0 NT% MN SUPERSATURATED SOLID SOLUTIONS WAS INVESTIGATED BY ISOCHRONAL AND ISOTHERMAL STUDIES OF THE VARIATION OF THEIR LATTICE PARAMETER. THE SUPERSATURATED SOLID SOLUTION WAS STABLE UP TO 175 C AND THE ACTIVATION ENERGY FOR THE DECOMPOSITION OF THE SUPERSATURATED SOLID SOLUTION WAS CALCULATED AS 30 KCAL/MOLE. THE MORPHOLOGICAL AND KINETIC NATURE OF CORROSION OF THE CONVENTIONALLY AND RAPIDLY SOLIDIFIED AL-4.5 NT% CU-2.0 NT% MN ALLOYS WERE INVESTIGATED IN AQUEOUS 3.5NT% NACL. CORROSION CAN BE DESCRIBED BY TWO ANODIC REACTIONS. THE FIRST REPRESENTS CORROSION OF THE INTERMETALLIC PHASES WHILE THE SECOND CORROSION OF THE A-AL SOLID SOLUTIONS.","abstract_html":"AL-4.5 NT% CU-2.0 NT% MN ALLOY SPECIMENS WAS SOLIDIFIED AT VARIOUS COOLING RATES. A SET OF THESE ALLOYS WAS HEAT-TREATED. THE RESULTING MICROSTRUCTURES WERE STUDIED BY OPTICAL MICROSCOPY, TRANSMISSION AND SCANNING TRANSMISSION ELECTRON MICROSCOPIES AND X-RAY DIFFRACTION ANALYSIS. THE EQUILIBRIUM PHASES, AL6MN AND AL2CU FOUND IN THE CONVENTIONALLY SOLIDIFIED ALLOYS WERE NOT OBSERVED IN THE RAPIDLY SOLIDIFIED (AS-SPUN) ALLOY. INSTEAD THE TERNARY COMPOUND AL2OCU2MN3 AND A-AL SOLID SOLUTION WERE EXCLUSIVELY PRESENT. THE STABILITY OF THE AL-4.5 NT% CU-2.0 NT% MN SUPERSATURATED SOLID SOLUTIONS WAS INVESTIGATED BY ISOCHRONAL AND ISOTHERMAL STUDIES OF THE VARIATION OF THEIR LATTICE PARAMETER. THE SUPERSATURATED SOLID SOLUTION WAS STABLE UP TO 175 C AND THE ACTIVATION ENERGY FOR THE DECOMPOSITION OF THE SUPERSATURATED SOLID SOLUTION WAS CALCULATED AS 30 KCAL/MOLE. THE MORPHOLOGICAL AND KINETIC NATURE OF CORROSION OF THE CONVENTIONALLY AND RAPIDLY SOLIDIFIED AL-4.5 NT% CU-2.0 NT% MN ALLOYS WERE INVESTIGATED IN AQUEOUS 3.5NT% NACL. CORROSION CAN BE DESCRIBED BY TWO ANODIC REACTIONS. THE FIRST REPRESENTS CORROSION OF THE INTERMETALLIC PHASES WHILE THE SECOND CORROSION OF THE A-AL SOLID SOLUTIONS.","abstract_has_math":false,"creators":["Skolianos, Stefanos","Σκολιανός, Στέφανος"],"institution":"Institutes outside Greece","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1986,"date_issued":"1986","date_published":"1986","updated_at":"2026-07-24T02:25:17Z","subjects":["ΑΛΟΥΜΙΝΙΟ-ΚΡΑΜΑΤΑ","ΓΡΗΓΟΡΗ ΣΤΕΡΕΟΠΟΙΗΣΗ","Διάβρωση","Aluminium alloys","Corrosion","RAPID SOLIDIFICATION"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0479"],"render_values":[{"text":"10.12681/eadd/0479","href":"https://doi.org/10.12681/eadd/0479","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/0479","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Skolianos, Stefanos","Σκολιανός, Στέφανος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1986"]},{"key":"dc:publisher","label":"Institution","values":["Institutes outside Greece","Ιδρύματα Εξωτερικού"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ΑΛΟΥΜΙΝΙΟ-ΚΡΑΜΑΤΑ","ΓΡΗΓΟΡΗ ΣΤΕΡΕΟΠΟΙΗΣΗ","Διάβρωση","Aluminium alloys","Corrosion","RAPID SOLIDIFICATION"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0479","http://hdl.handle.net/10442/hedi/0479"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["AL-4.5 NT% CU-2.0 NT% MN ALLOY SPECIMENS WAS SOLIDIFIED AT VARIOUS COOLING RATES. A SET OF THESE ALLOYS WAS HEAT-TREATED. THE RESULTING MICROSTRUCTURES WERE STUDIED BY OPTICAL MICROSCOPY, TRANSMISSION AND SCANNING TRANSMISSION ELECTRON MICROSCOPIES AND X-RAY DIFFRACTION ANALYSIS. THE EQUILIBRIUM PHASES, AL6MN AND AL2CU FOUND IN THE CONVENTIONALLY SOLIDIFIED ALLOYS WERE NOT OBSERVED IN THE RAPIDLY SOLIDIFIED (AS-SPUN) ALLOY. INSTEAD THE TERNARY COMPOUND AL2OCU2MN3 AND A-AL SOLID SOLUTION WERE EXCLUSIVELY PRESENT. THE STABILITY OF THE AL-4.5 NT% CU-2.0 NT% MN SUPERSATURATED SOLID SOLUTIONS WAS INVESTIGATED BY ISOCHRONAL AND ISOTHERMAL STUDIES OF THE VARIATION OF THEIR LATTICE PARAMETER. THE SUPERSATURATED SOLID SOLUTION WAS STABLE UP TO 175 C AND THE ACTIVATION ENERGY FOR THE DECOMPOSITION OF THE SUPERSATURATED SOLID SOLUTION WAS CALCULATED AS 30 KCAL/MOLE. THE MORPHOLOGICAL AND KINETIC NATURE OF CORROSION OF THE CONVENTIONALLY AND RAPIDLY SOLIDIFIED AL-4.5 NT% CU-2.0 NT% MN ALLOYS WERE INVESTIGATED IN AQUEOUS 3.5NT% NACL. CORROSION CAN BE DESCRIBED BY TWO ANODIC REACTIONS. THE FIRST REPRESENTS CORROSION OF THE INTERMETALLIC PHASES WHILE THE SECOND CORROSION OF THE A-AL SOLID SOLUTIONS.","ΔΕΙΓΜΑΤΑ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΣΤΕΡΕΟΠΟΙΗΘΗΚΑΝ ΜΕ ΔΙΑΦΟΡΕΣ ΤΑΧΥΤΗΤΕΣ ΨΥΞΗΣ. ΕΝΑ ΣΕΤ ΑΠΟ ΤΑ ΚΡΑΜΑΤΑ ΑΥΤΑ ΥΠΟΒΛΗΘΗΚΕ ΣΕ ΘΕΡΜΙΚΗ ΕΠΕΞΕΡΓΑΣΙΑ. ΟΙ ΔΙΑΦΟΡΕΣ ΔΟΜΕΣ ΜΕΛΕΤΗΘΗΚΑΝ ΜΕ ΟΠΤΙΚΟ ΚΑΙ ΗΛΕΚΤΡΟΝΙΚΟ ΜΙΚΡΟΣΚΟΠΙΟ ΚΑΘΩΣ ΚΑΙ ΜΕ ΑΚΤΙΝΕΣ Χ. ΟΙ ΦΑΣΕΙΣ ΙΣΟΡΡΟΠΙΑΣ AL6ΜΝ ΚΑΙ AL2CU ΠΟΥ ΠΑΡΑΤΗΡΗΘΗΚΑΝ ΣΤΑ ΚΡΑΜΑΤΑ ΠΟΥ ΣΤΕΡΕΟΠΟΙΗΘΗΚΑΝ ΜΕ ΣΥΜΒΑΤΙΚΕΣ ΜΕΘΟΔΟΥΣ ΔΕΝ ΠΑΡΑΤΗΡΗΘΗΚΑΝ ΣΤΟ ΓΡΗΓΟΡΟ ΣΤΕΡΕΟΠΟΙΗΜΕΝΟ ΚΡΑΜΑ ΟΠΟΥ ΜΟΝΟ ΟΙ ΦΑΣΕΙΣ AL20CU2MN3 ΚΑΙ ΤΟ ΣΤΕΡΕΟ ΔΙΑΛΥΜΑ AL ΠΑΡΑΤΗΡΗΘΗΚΑΝ.Η ΣΤΑΘΕΡΟΤΗΤΑ ΤΟΥ ΥΠΕΡΚΟΡΕΣΜΕΝΟΥ ΣΤΕΡΕΟΥ ΔΙΑΛΥΜΑΤΟΣ ΤΟΥ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΕΞΕΤΑΣΘΗΚΕ ΜΕ ΙΣΟΧΡΟΝΕΣ ΚΑΙ ΙΣΟΘΕΡΜΕΣ ΜΕΛΕΤΕΣ. ΤΟ ΥΠΕΡΚΟΡΕΣΜΕΝΟ ΣΤΕΡΕΟ ΔΙΑΛΥΜΑ ΗΤΑΝ ΣΤΑΘΕΡΟ ΜΕΧΡΙ ΤΟΥΣ 175 C ΚΑΙ Η ΕΝΕΡΓΕΙΑ ΕΝΕΡΓΟΠΟΙΗΣΗΣ ΓΙΑ ΤΗ ΔΙΑΣΠΑΣΗ ΤΟΥ ΥΠΟΛΟΓΙΣΘΗΚΕ ΣΕ 30 KCAL/MOLE. Η ΜΟΡΦΟΛΟΓΙΚΗ ΚΑΙ ΚΙΝΗΤΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΤΗΣ ΔΙΑΒΡΩΣΗΣ ΤΟΥ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΜΕΛΕΤΗΘΗΚΕ ΣΕ ΔΙΑΛΥΜΑ 3.5ΝΤ% NACL. Η ΔΙΑΒΡΩΣΗ ΜΠΟΡΕΙ ΝΑ ΠΕΡΙΓΡΑΦΕΙ ΜΕ ΔΥΟ ΑΝΟΔΙΚΕΣ ΑΝΤΙΔΡΑΣΕΙΣ. Η ΠΡΩΤΗΑΝΤΙΣΤΟΙΧΕΙ ΣΤΗ ΔΙΑΒΡΩΣΗ ΤΩΝ ΜΕΣΟΜΕΤΑΛΛΙΚΩΝ ΕΝΩΣΕΩΝ ΚΑΙ Η ΔΕΥΤΕΡΗ ΣΤΗ ΔΙΑΒΡΩΣΗΤΟΥ ΣΤΕΡΕΟΥ ΔΙΑΛΥΜΑΤΟΣ ΑΛΟΥΜΙΝΙΟΥ."]},{"key":"dc:title","label":"Title","values":["ΔΟΜΗ ΚΑΙ ΔΙΑΒΡΩΤΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΚΡΑΜΑΤΩΝ ΑΛΟΥΜΙΝΙΟΥ-ΧΑΛΚΟΥ-ΜΑΓΓΑΝΙΟΥ ΓΡΗΓΟΡΑ ΣΤΕΡΕΟΠΟΙΗΜΕΝΩΝ","MICROSTRUCTURE AND CORROSION BEHAVIOR OF RAPIDLY SOLIDIFIED AL-CU-MN ALLOYS"]}]}],"canonical_facts":{"dc:creator":["Skolianos, Stefanos","Σκολιανός, Στέφανος"],"dc:date":["1986"],"dc:description":["AL-4.5 NT% CU-2.0 NT% MN ALLOY SPECIMENS WAS SOLIDIFIED AT VARIOUS COOLING RATES. A SET OF THESE ALLOYS WAS HEAT-TREATED. THE RESULTING MICROSTRUCTURES WERE STUDIED BY OPTICAL MICROSCOPY, TRANSMISSION AND SCANNING TRANSMISSION ELECTRON MICROSCOPIES AND X-RAY DIFFRACTION ANALYSIS. THE EQUILIBRIUM PHASES, AL6MN AND AL2CU FOUND IN THE CONVENTIONALLY SOLIDIFIED ALLOYS WERE NOT OBSERVED IN THE RAPIDLY SOLIDIFIED (AS-SPUN) ALLOY. INSTEAD THE TERNARY COMPOUND AL2OCU2MN3 AND A-AL SOLID SOLUTION WERE EXCLUSIVELY PRESENT. THE STABILITY OF THE AL-4.5 NT% CU-2.0 NT% MN SUPERSATURATED SOLID SOLUTIONS WAS INVESTIGATED BY ISOCHRONAL AND ISOTHERMAL STUDIES OF THE VARIATION OF THEIR LATTICE PARAMETER. THE SUPERSATURATED SOLID SOLUTION WAS STABLE UP TO 175 C AND THE ACTIVATION ENERGY FOR THE DECOMPOSITION OF THE SUPERSATURATED SOLID SOLUTION WAS CALCULATED AS 30 KCAL/MOLE. THE MORPHOLOGICAL AND KINETIC NATURE OF CORROSION OF THE CONVENTIONALLY AND RAPIDLY SOLIDIFIED AL-4.5 NT% CU-2.0 NT% MN ALLOYS WERE INVESTIGATED IN AQUEOUS 3.5NT% NACL. CORROSION CAN BE DESCRIBED BY TWO ANODIC REACTIONS. THE FIRST REPRESENTS CORROSION OF THE INTERMETALLIC PHASES WHILE THE SECOND CORROSION OF THE A-AL SOLID SOLUTIONS.","ΔΕΙΓΜΑΤΑ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΣΤΕΡΕΟΠΟΙΗΘΗΚΑΝ ΜΕ ΔΙΑΦΟΡΕΣ ΤΑΧΥΤΗΤΕΣ ΨΥΞΗΣ. ΕΝΑ ΣΕΤ ΑΠΟ ΤΑ ΚΡΑΜΑΤΑ ΑΥΤΑ ΥΠΟΒΛΗΘΗΚΕ ΣΕ ΘΕΡΜΙΚΗ ΕΠΕΞΕΡΓΑΣΙΑ. ΟΙ ΔΙΑΦΟΡΕΣ ΔΟΜΕΣ ΜΕΛΕΤΗΘΗΚΑΝ ΜΕ ΟΠΤΙΚΟ ΚΑΙ ΗΛΕΚΤΡΟΝΙΚΟ ΜΙΚΡΟΣΚΟΠΙΟ ΚΑΘΩΣ ΚΑΙ ΜΕ ΑΚΤΙΝΕΣ Χ. ΟΙ ΦΑΣΕΙΣ ΙΣΟΡΡΟΠΙΑΣ AL6ΜΝ ΚΑΙ AL2CU ΠΟΥ ΠΑΡΑΤΗΡΗΘΗΚΑΝ ΣΤΑ ΚΡΑΜΑΤΑ ΠΟΥ ΣΤΕΡΕΟΠΟΙΗΘΗΚΑΝ ΜΕ ΣΥΜΒΑΤΙΚΕΣ ΜΕΘΟΔΟΥΣ ΔΕΝ ΠΑΡΑΤΗΡΗΘΗΚΑΝ ΣΤΟ ΓΡΗΓΟΡΟ ΣΤΕΡΕΟΠΟΙΗΜΕΝΟ ΚΡΑΜΑ ΟΠΟΥ ΜΟΝΟ ΟΙ ΦΑΣΕΙΣ AL20CU2MN3 ΚΑΙ ΤΟ ΣΤΕΡΕΟ ΔΙΑΛΥΜΑ AL ΠΑΡΑΤΗΡΗΘΗΚΑΝ.Η ΣΤΑΘΕΡΟΤΗΤΑ ΤΟΥ ΥΠΕΡΚΟΡΕΣΜΕΝΟΥ ΣΤΕΡΕΟΥ ΔΙΑΛΥΜΑΤΟΣ ΤΟΥ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΕΞΕΤΑΣΘΗΚΕ ΜΕ ΙΣΟΧΡΟΝΕΣ ΚΑΙ ΙΣΟΘΕΡΜΕΣ ΜΕΛΕΤΕΣ. ΤΟ ΥΠΕΡΚΟΡΕΣΜΕΝΟ ΣΤΕΡΕΟ ΔΙΑΛΥΜΑ ΗΤΑΝ ΣΤΑΘΕΡΟ ΜΕΧΡΙ ΤΟΥΣ 175 C ΚΑΙ Η ΕΝΕΡΓΕΙΑ ΕΝΕΡΓΟΠΟΙΗΣΗΣ ΓΙΑ ΤΗ ΔΙΑΣΠΑΣΗ ΤΟΥ ΥΠΟΛΟΓΙΣΘΗΚΕ ΣΕ 30 KCAL/MOLE. Η ΜΟΡΦΟΛΟΓΙΚΗ ΚΑΙ ΚΙΝΗΤΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΤΗΣ ΔΙΑΒΡΩΣΗΣ ΤΟΥ ΚΡΑΜΑΤΟΣ AL-4.5 NT% CU-2.0 NT% MN ΜΕΛΕΤΗΘΗΚΕ ΣΕ ΔΙΑΛΥΜΑ 3.5ΝΤ% NACL. Η ΔΙΑΒΡΩΣΗ ΜΠΟΡΕΙ ΝΑ ΠΕΡΙΓΡΑΦΕΙ ΜΕ ΔΥΟ ΑΝΟΔΙΚΕΣ ΑΝΤΙΔΡΑΣΕΙΣ. Η ΠΡΩΤΗΑΝΤΙΣΤΟΙΧΕΙ ΣΤΗ ΔΙΑΒΡΩΣΗ ΤΩΝ ΜΕΣΟΜΕΤΑΛΛΙΚΩΝ ΕΝΩΣΕΩΝ ΚΑΙ Η ΔΕΥΤΕΡΗ ΣΤΗ ΔΙΑΒΡΩΣΗΤΟΥ ΣΤΕΡΕΟΥ ΔΙΑΛΥΜΑΤΟΣ ΑΛΟΥΜΙΝΙΟΥ."],"dc:identifier":["10.12681/eadd/0479","http://hdl.handle.net/10442/hedi/0479"],"dc:language":["eng"],"dc:publisher":["Institutes outside Greece","Ιδρύματα Εξωτερικού"],"dc:subject":["ΑΛΟΥΜΙΝΙΟ-ΚΡΑΜΑΤΑ","ΓΡΗΓΟΡΗ ΣΤΕΡΕΟΠΟΙΗΣΗ","Διάβρωση","Aluminium alloys","Corrosion","RAPID SOLIDIFICATION"],"dc:title":["ΔΟΜΗ ΚΑΙ ΔΙΑΒΡΩΤΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΚΡΑΜΑΤΩΝ ΑΛΟΥΜΙΝΙΟΥ-ΧΑΛΚΟΥ-ΜΑΓΓΑΝΙΟΥ ΓΡΗΓΟΡΑ ΣΤΕΡΕΟΠΟΙΗΜΕΝΩΝ","MICROSTRUCTURE AND CORROSION BEHAVIOR OF RAPIDLY SOLIDIFIED AL-CU-MN ALLOYS"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:25:17Z"}