Abstract
Creep behaviors of the aluminum composites containing 3 vol% of TiO 2 nanoparticles (15 nm in size) are studied at 523 K. In the high stress region, the composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress, which is determined to be 162 MPa. The true stress exponent of minimum creep strain rate is found to be 5 implying the creep is controlled by lattice diffusion. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa, since the creep behavior depends dominantly on the diffusional flows of the matrix that are strictly limited by the nanoparticles. Creep behaviors of the aluminum composites containing TiO2 nanoparticles are studied at 523 K. The composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress. The true stress exponent of minimum creep strain rate is found to be 5. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa.
| Original language | English |
|---|---|
| Pages (from-to) | 1029-1033 |
| Number of pages | 5 |
| Journal | Advanced Engineering Materials |
| Volume | 15 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2013 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
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Creep properties in TiO2 nanoparticle reinforced aluminum matrix composites. / Shin, Jaehyuck; Bae, Donghyun.
In: Advanced Engineering Materials, Vol. 15, No. 11, 01.11.2013, p. 1029-1033.Research output: Contribution to journal › Article
TY - JOUR
T1 - Creep properties in TiO2 nanoparticle reinforced aluminum matrix composites
AU - Shin, Jaehyuck
AU - Bae, Donghyun
PY - 2013/11/1
Y1 - 2013/11/1
N2 - Creep behaviors of the aluminum composites containing 3 vol% of TiO 2 nanoparticles (15 nm in size) are studied at 523 K. In the high stress region, the composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress, which is determined to be 162 MPa. The true stress exponent of minimum creep strain rate is found to be 5 implying the creep is controlled by lattice diffusion. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa, since the creep behavior depends dominantly on the diffusional flows of the matrix that are strictly limited by the nanoparticles. Creep behaviors of the aluminum composites containing TiO2 nanoparticles are studied at 523 K. The composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress. The true stress exponent of minimum creep strain rate is found to be 5. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa.
AB - Creep behaviors of the aluminum composites containing 3 vol% of TiO 2 nanoparticles (15 nm in size) are studied at 523 K. In the high stress region, the composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress, which is determined to be 162 MPa. The true stress exponent of minimum creep strain rate is found to be 5 implying the creep is controlled by lattice diffusion. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa, since the creep behavior depends dominantly on the diffusional flows of the matrix that are strictly limited by the nanoparticles. Creep behaviors of the aluminum composites containing TiO2 nanoparticles are studied at 523 K. The composites show enhanced creep resistance exhibiting high value of the apparent stress exponent and the high threshold stress. The true stress exponent of minimum creep strain rate is found to be 5. Negligible stress dependence in the creep rate is found when the applied stresses are <200 MPa.
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U2 - 10.1002/adem.201300099
DO - 10.1002/adem.201300099
M3 - Article
VL - 15
SP - 1029
EP - 1033
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
SN - 1438-1656
IS - 11
ER -