Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials:
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| Format: | Book |
| Language: | English |
| Published: |
2003
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Item Description: | Aachen, Techn. Hochsch., Diss., 2003 |
| Physical Description: | VI, 178 S. Ill., graph. Darst. |
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| 245 | 1 | 0 | |a Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials |c vorgelegt von Keyun Wen |
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Record in the Search Index
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| adam_text | INTERFACIAL MICROSTRUCTURE AND PHASE FORMATION IN THIXOFORMED ALLOYS AND
SOLID-SOLID DIFFUSION BONDED COMPOSITE MATERIALS VON DER FAKULTAT FIIR
BERGBAU, HUTTENWESEN UND GEOWISSENSCHAFTEN DER RHEINISCH-WESTFALISCHEN
TECHNISCHEN HOCHSCHULE AACHEN ZUR ERLANGUNG DES AKADEMISCHEN GRADES
EINES DOKTORS DER INGENIEURWISSENSCHAFTEN GENEHMIGTE DISSERTATION
VORGELEGTE VON M. E. KEYUN WEN YIYANG, HUNAN, CHINA BERICHTER:
UNIV.-PROF. DR.RER.NAT. GIINTER GOTTSTEIN URIV.-PROF. JOCHEN M.
SCHNEIDER, PH.D. TAG DER MIINDLICHEN I HLUHB DARMSTADT 15694408 CONTENTS
INTRODUCTION.. PART I INTERFACIAL MICROSTRUCTURE AND PHASE FORMATION IN
THIXOFORMED ALLOY A356 1 INTRODUCTION 5 2 EXPERIMENTAL PROCEDURE 7 3
INTERNIETALLIE COMPOUNDS IN THIXOFORMED ALUMINIUM ALLOY A356 9 3.1
MOTIVATION OF STUDY 9 3.2 RESULTS 9 3.2.1 OPTICAL MICROSCOPY 9 3.2.2
TRANSMISSION ELECTRON MICROSCOPY STUDIES 10 3.2.2.1 ALUMINUM PHASE 10
3.2.2.2 SILICON PHASE 10 3.2.2.3 QUATERNARY FEMG 3 SI 6 AL 8 PHASE 13
3.2.2.4 P-AL 4 . 5 FESI PHASE 15 3.2.2.5 DV-ALFESI PHASE 17 3.2.2.6 A-AL
8 FE 2 SI PHASE 18 3.2.2.7 MG 2 SI PHASE 19 3.2.2.8 HEXAGONAL PHASE 19
3.2.2.9 AL 4 SI 2 SR PHASE 22 3.2.3 HEAT TREATMENT 23 3.3 DISCUSSION 23
3.3.1 FORMATION OF FE-RICH INTERMETALLIC PHASES 23 CONTENTS 3.3.2
FORMATION OF MG-SI METASTABLE PHASES 26 3.4 CONCLUSION 26 4
MICROSTRUCTURE AND MODIFICATION MECHANISMS OF THE SI PHASE IN AN AS-
THIXOFORMED ALLOY A356 27 4.1 MOTIVATION OF STUDY 27 4.2 RESULTS 27 4.3
DISCUSSION 34 4.3.1 HETEROGENEOUS NUCLEATION OF SI 34 4.3.2 NUCLEATION
OF CRYSTALS WITH DIAMOND STRUCTURE AND MODIFICATION MECHANISM 37 4.3.3
IMPURITY INDUCED STACKING FAULTS 40 4.4 CONCLUSION 40 LITERATURE
I.......................... ...*..**..***...........***........
.*.....****..**..*.....**..........*....***43 PART II INTERFACIAL
MICROSTRUCTURE AND PHASE FORMATION IN THE NIAL MATRIX COMPOSITES
REINFORCED WITH BN-COATED CONTINUOUS SINGLE CRYSTAL A1 2 O 3 FIBERS 1
INTRODUCTION 49 2 COMPOSITE COMPONENTS 53 2.1 NIAL 53 2.2 SAPPHIRE (A1 2
O 3 ) 55 2.3 BN 56 3 INTERFACE AND MECHANICAL PROPERTIES 59 3.1
INTERFACE 59 3.1.1 TYPES OF BONDING AT THE INTERFACE 59 3.1.2
INTERFACIAL ENERGY AND WORK OF ADHESION 61 3.1.3 MEASUREMENT OF
INTERFACIAL STRENGTH 63 CONTENTS IN 3.2 MECHANICAL PROPERTIES OF
COMPOSITES 64 3.2.1 STIFFNESS OF CONTINUOUS FIBER COMPOSITES 65 3.2.2
LONGITUDINAL TENSILE STRENGTH GL OF CONTINUOUS FIBER COMPOSITES 65 3.2.3
MECHANICS OF LOAD TRANSFER FROM MATRIX TO FIBER 70 3.2.4 THERMAL
RESIDUAL STRESS 71 4 COMPOSITE FABRICATION 75 4.1 FABRICATION OF THE
COMPOSITE SAMPLES FOR TEM STUDIES OF INTERFACIAL MICROSTRUCTURE 75 4.2
FABRICATION OF THE COMPOSITE SAMPLES FOR STUDIES OF MECHANICAL
PROPERTIES..77 4.2.1 PLATE-FIBER-PLATE PROCESS 77 4.2.2 FIBER COATING
PROCESS 79 5 INTERFACIAL MICROSTRUCTURE AND REACTION 85 5.1 MOTIVATION
OF STUDY 85 5.2 EXPERIMENTAL PROCEDURES 85 5.3 RESULTS AND DISCUSSION 86
5.3.1 NIAL/BN INTERFACE 86 5.3.2 MICROSTRUCTURE OF BN COATING AND
AI2O3/BN INTERFACE 92 5.4 CONCLUSION 94 6 INTERFACIAL THERMAL STABILITY
97 6.1 MOTIVATION OF STUDY 97 6.2 EXPERIMENTAL PROCEDURES 97 6.3 RESULTS
98 6.3.1 AI2O3/BN INTERFACE 98 6.3.1.1 AI2O3/BN INTERFACE IN THE
COMPOSITE ANNEALED AT 1000C FOR 100 H 98 6.3.1.2 AI2O3/BN INTERFACE IN
THE COMPOSITE ANNEALED AT 1000C FOR 500 H 100 6.3.2 NIAL/BN INTERFACE
100 6.3.2.1 NIAL/BN INTERFACE IN THE COMPOSITE ANNEALED AT 1000C FOR
100 H 100 CONTENTS 6.3.2.2 NIAL/BN INTERFACE IN THE COMPOSITE ANNEALED
AT 1000C FOR 500 H 102 6.4 DISCUSSION 104 6.4.1 FORMATION OF A CUBIC
PHASE 104 6.4.2 FORMATION OF A1| 8 B 4 C 33 PHASE 107 6.5 CONCLUSION 110
MICROSTRUCTURE OF THE COMPOSITE FABRICATED BY FIBER COATING PROCESS ILL
7.1 MOTIVATION OF STUDY 111 7.2 EXPERIMENTAL PROCEDURES 112 7.3 RESULTS
113 7.3.1 MICROSTRUCTURE DEVELOPMENT OF CO-SPUTTERING DEPOSITED NIAL 113
7.3.2 MICROSTRUCTURE OF THE AS-FABRICATED COMPOSITES 118 7.3.2.1
INTERFACIAL MICROSTRUCTURE OF THE AS-FABRICATED COMPOSITES... 119
7.3.2.2 PRECIPITATION IN NIAL MATRIX 122 7.4 DISCUSSION 127 7.4.1
FORMATION OF NON-EQUILIBRIUM PHASES AT THE EARLY STAGE OF SPUTTERING
DEPOSITION 127 7.4.2 INTERFACIAL REACTION IN THE COMPOSITES FABRICATED
BY FIBER COATING PROCESS 130 7.4.3 PRECIPITATION OF X PHASE AND
ORIENTATION RELATIONSHIP 131 7.5 CONCLUSION 133 INTERFACIAL SHEAR
STRENGTH AND FIBER STRENGTH 135 8.1 MOTIVATION OF STUDY 135 8.2
EXPERIMENTAL PROCEDURES 136 8.2.1 FIBER PUSHOUT TEST 136 8.2.2 FIBER
TESTING 137 8.3 RESULTS 139 8.3.1 FIBER PUSHOUT BEHAVIOR 139 8.3.2 FIBER
TESTING 148 CONTENTS V 8.4 DISCUSSION 150 8.4.1 INTERFACIAL SHEAR
STRENGTH 150 8.4.2 FIBER STRENGTH 157 8.5 CONCLUSION 162 GENERAL
CONCLUSION 165 ZUSAMMENFASSUNG 169 LITERATURE II 173
|
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| indexdate | 2024-07-09T19:58:57Z |
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| language | English |
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| physical | VI, 178 S. Ill., graph. Darst. |
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| spelling | Wen, Keyun 1964- Verfasser (DE-588)12884261X aut Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials vorgelegt von Keyun Wen 2003 VI, 178 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Aachen, Techn. Hochsch., Diss., 2003 Aluminiumlegierung swd Aluminiumoxide swd Bornitrid swd Faserverbundwerkstoff swd Grenzflächenreaktion swd Intermetallische Verbindungen swd Mikrostruktur swd Nickelaluminide swd Thixoforming swd (DE-588)4113937-9 Hochschulschrift gnd-content HEBIS Datenaustausch Darmstadt application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=012843435&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wen, Keyun 1964- Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials Aluminiumlegierung swd Aluminiumoxide swd Bornitrid swd Faserverbundwerkstoff swd Grenzflächenreaktion swd Intermetallische Verbindungen swd Mikrostruktur swd Nickelaluminide swd Thixoforming swd |
| subject_GND | (DE-588)4113937-9 |
| title | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials |
| title_auth | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials |
| title_exact_search | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials |
| title_full | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials vorgelegt von Keyun Wen |
| title_fullStr | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials vorgelegt von Keyun Wen |
| title_full_unstemmed | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials vorgelegt von Keyun Wen |
| title_short | Interfacial microstructure and phase formation in thixoformed alloys and solid-solid diffusion bonded composite materials |
| title_sort | interfacial microstructure and phase formation in thixoformed alloys and solid solid diffusion bonded composite materials |
| topic | Aluminiumlegierung swd Aluminiumoxide swd Bornitrid swd Faserverbundwerkstoff swd Grenzflächenreaktion swd Intermetallische Verbindungen swd Mikrostruktur swd Nickelaluminide swd Thixoforming swd |
| topic_facet | Aluminiumlegierung Aluminiumoxide Bornitrid Faserverbundwerkstoff Grenzflächenreaktion Intermetallische Verbindungen Mikrostruktur Nickelaluminide Thixoforming Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=012843435&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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