Effects of thermal residual stress creeping on microstructure and tensile properties of SiC whisker reinforced aluminum matrix composite

Fei, W.D.; Hu, Maoliang; Yao, C.K.

doi:10.1016/s0921-5093(02)00827-4

Cited by 25 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9] The plastic deformation inside the matrix near the interface has been confirmed by observations of dislocation generation through in-situ dynamic studies in the transmission electron microscope (TEM) and by correlating the dependence of the composite YS with the conditions of quenching from higher temperatures. [10][11][12] A recent study [13] has shown that the matrix close to the particle-matrix interfaces of the Al-TiC and Al-SiC composites shows an increase in microhardness with an increasing number of thermal cycles, indicating that strain hardening is caused by dislocation generation and movement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Cycling on Creep Behavior of Powder-Metallurgy-Processed and Hot-Rolled Al and Al-SiC Particulate Composites

Pal

Bhanuprasad

Mitra

et al. 2009

Metall Mater Trans A

View full text Add to dashboard Cite

The tensile creep behavior of powder metallurgy (P/M)-processed and hot-rolled commercially pure Al and Al-5 or Al-10 vol pct SiC particulate composites has been evaluated after subjecting to 0, 2, and 8 thermal cycles between 500°C and 0°C with rapid quenching. The images of microstructures obtained using scanning and transmission electron microscopy as well as changes in the electrical resistivity, Young's modulus, and microhardness have been examined in the samples subjected to thermal cycling, in order to compare the effects of structural damage and strengthening by dislocation generation. The damage is caused by voids formed by vacancy coalescence, and is more severe in pure Al than in Al-SiC p composites, because the particlematrix interfaces in the composites act as effective sinks for vacancies. Creep tests have shown that the application of 2 thermal cycles lowers the creep strain rates in both pure Al and Al-SiC p composites. However, the creep resistance of pure Al gets significantly deteriorated, unlike the mild deterioration in the Al-5 SiC p composite, while the time to rupture for the Al-10 SiC p composite is increased. The dislocation structure and subgrain sizes in the Al and in the matrices of the Al-SiC p composites in the as-rolled condition, after thermal cycling, and after creep tests, have been compared and related to the creep behavior. The dimple sizes of the crept fracture surfaces appear to be dependent on the void density, tertiary component of strain, and time to rupture.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Cycling on Creep Behavior of Powder-Metallurgy-Processed and Hot-Rolled Al and Al-SiC Particulate Composites

Pal

Bhanuprasad

Mitra

et al. 2009

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

“…Since ceramic whiskers such as SiC and Al 2 O 3 have strength and modulus almost as high as theoretical values, they were introduced into the composites as the reinforcements [2][3][4][5][6]. Generally, whiskers are monocrystals with the diameter from 0.1 to 10 m and length to diameter ratio from 10 to 1000.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of tetrapod-like ZnO whiskers reinforced Al matrix composite

Guo

Xiong

Yang

et al. 2008

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…SiC whiskers are also used as reinforcements to manufacture MMCs to use in structural applications [54,55].…”

Section: Sicmentioning

confidence: 99%

Correlation Studies between Outdoor Exposure and Accelerated Laboratory Corrosion Tests for Galvanic and Non-Galvanic Ceramic-Aluminum Couples

Srinivasan

Hihara

2009

ECS Trans.

View full text Add to dashboard Cite

This dissertation is dedicated to Deepika, my wife.ii ACKNOWLEDGEMENTS I would like to express my gratitude and sincere thanks to Dr. Lloyd H. Hihara for his support, endless enthusiasm and encouragement. This dissertation has benefited immensely from his comments, reviews and opinions. I would like to thank him for his time, patience and help. I would also like to thank the dissertation committee -Dr. Ceramics and 6061-T6 Al coupons were coupled together using 6061-T6 Cclamps. Outdoor experiments for 3, 6, and 12-month exposure periods were conducted at eight different test sites, to determine corrosion behavior for various climate and environmental conditions (i.e., rain forest, alpine, marine, volcanic, industrial, agricultural, and arid). Accelerated laboratory experiments include controlled humiditychamber experiments and cyclic corrosion test chamber (CCTC) experiments following modified GM9540P using different chloride-containing solutions. Corrosion rates were v determined at the ceramic-Al interface for the outdoor and accelerated laboratory experiments using weight loss data. Polarization experiments were conducted on 6061-T6Al to study the governing corrosion mechanisms in different chloride solutions. Zeroresistant ammeter (ZRA) studies were conducted between 6061-T6 Al and the conductive ceramics (TiB 2 ) inside a humidity chamber by spraying different chloride solutions in intervals of 24 hours for 5 days to simulate rain and the steady-state galvanic corrosion rates (i Galv ) were observed.

show abstract

Effects of thermal residual stress creeping on microstructure and tensile properties of SiC whisker reinforced aluminum matrix composite

Cited by 25 publications

References 12 publications

Effect of Thermal Cycling on Creep Behavior of Powder-Metallurgy-Processed and Hot-Rolled Al and Al-SiC Particulate Composites

Effect of Thermal Cycling on Creep Behavior of Powder-Metallurgy-Processed and Hot-Rolled Al and Al-SiC Particulate Composites

Microstructure and properties of tetrapod-like ZnO whiskers reinforced Al matrix composite

Correlation Studies between Outdoor Exposure and Accelerated Laboratory Corrosion Tests for Galvanic and Non-Galvanic Ceramic-Aluminum Couples

Contact Info

Product

Resources

About