Influence of fiber-reinforcement on the microstructure of an Al-Si-based alloy
- Max-Planck-Inst. fuer Metallforschung, Stuttgart (Germany). Inst. fuer Werkstoffwissenschaft
The aim of the present paper is to discuss some aspects, i.e., hardness and tensile strength considering the changes in the microstructure of an Al-Si-based alloy due to fibre-reinforcement. The investigations have been undertaken with an AlSi12CuMgNi alloy and two metal matrix composites reinforced with 20 vol% of either Saffil, a nearly pure alumina fibre with a silica content of about 3-4 %, or Fiberfrax, consisting of 50% SiO[sub 2] and 50% Al[sub 2]O[sub 3], respectively. The tensile tests have been performed on flat specimens that were cut from rectangular plates by spark-erosion. These specimens were heat treated for 100 h at 623 K to a highly overaged conditions (HOA). The aging behavior of the three materials has been investigated for an aging temperature of 473 K by Vickers hardness measurements. These experiments were performed using a Wolpert Dia Testor 2 with a force of 200 N. Tensile experiments were carried out on an Instron-testing machine with a constant strain rate of 3.3[center dot]10[sup [minus]4] s[sup [minus]1]. These investigations have been undertaken at temperature of 295, 473, 623 and 723 K, respectively.
- OSTI ID:
- 6096301
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Vol. 29:6; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM ALLOYS
MECHANICAL PROPERTIES
MICROSTRUCTURE
ALUMINIUM OXIDES
COPPER ALLOYS
MAGNESIUM ALLOYS
NICKEL ALLOYS
SILICON ALLOYS
SILICON OXIDES
AGING
BINARY ALLOY SYSTEMS
COMPOSITE MATERIALS
FIBERS
HARDNESS
REINFORCED MATERIALS
TENSILE PROPERTIES
ALLOY SYSTEMS
ALLOYS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
MATERIALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360603 - Materials- Properties