Effect of Fiber Volume Fraction on High Temperature Creep of Al2O3-SiO2(sf)/AZ91D Composite

Jun Tian

doi:10.4028/www.scientific.net/KEM.474-476.548

Paper Titles

A Kind of Network Security Evaluation Method Based on Local Variable Weight
p.527

A Hybrid Context Model for Pervasive Healthcare System
p.531

Research on Some Novel Functional Azobenzene Derivatives with Alkyl Chains and Different Substituted Groups
p.537

Spectral and Thermal Investigation of Novel Glycine-Based Schiff Base Derivative and its Metal Complexes
p.543

Effect of Fiber Volume Fraction on High Temperature Creep of Al₂O₃-SiO₂(sf)/AZ91D Composite
p.548

Analysis of the Acoustic Performance of Automotive Exhaust Muffler and Optimization of its Structure
p.553

Research of Histogram-Based Fruit Ripeness Identification with Nearest Neighbor Distance
p.559

The Mean Projected Range and Range Straggling of Nd Ions Implanted in Silicon Carbide
p.565

Study on the Software Defects Using Positive and Negative Association Rules Based on Multiple Minimum Supports
p.570

HomeKey Engineering MaterialsKey Engineering Materials Vols. 474-476Effect of Fiber Volume Fraction on High...

Effect of Fiber Volume Fraction on High Temperature Creep of Al₂O₃-SiO₂(sf)/AZ91D Composite

Abstract:

Constant stress tensile creep tests were conducted on AZ91D–20 vol.%, 25 vol.%, and 30 vol.% Al₂O₃-SiO₂ short fiber composites and on an unreinforced AZ91D matrix alloy. The creep resistance of the reinforced materials is shown to be considerably improved compared with the matrix alloy. With the increasing volume fraction of short fibers, the creep resistance of AZ91D composites is improved, and their creep threshold stresses are also increased accordingly. Because of the increasing volume fraction of short fibers, loads of bearing and transmission of short fibers will increase, and thus the creep resistance of AZ91D composites further improves, but the precipitation of β-Mg₁₇Al₁₂ precipitate increases in the number, it is easy to soften coarse, so that threshold stress of AZ91D composite does not increase greatly.