Journal of Inorganic Materials, Volume. 38, Issue 2, 177(2023)
Tensile Creep Behavior of Cansas-II SiCf/SiC Composites at High Temperatures
Figures & Tables(12)
. Dimensions and shape of tensile and tensile creep specimen (unit: mm)
. Tensile stress-strain curves of as-received and crept 2D-SiCf/SiC
. Macroscopic morphologies of fractures of 2D-SiCf/SiC under different conditions
. Morphologies of fracture oxidation zone of 2D-SiCf/SiC under different creep rupture conditions
. Interface and fiber damage in 2D-SiCf/SiC during creeping at 1300 ℃/100 MPa
Table 1. Basic properties of domestic second-generation Cansas-II silicon carbide fibers
View tableView in ArticleTable 1. Basic properties of domestic second-generation Cansas-II silicon carbide fibers
Diameter/ μm Density/ (g·cm-3) Tensile strength/GPa Tensile modulus/GPa 14 2.74 2.7 270
Table 2. Tensile properties of 2D-SiCf/SiC composites
View tableView in ArticleTable 2. Tensile properties of 2D-SiCf/SiC composites
Temperature/℃ E/GPa σPLS/MPa σUTS/MPa ε/% RT 273 115 282 0.57 1200 259 110 249 0.74 1300 223 92 229 0.60
Table 3. Tensile creep properties of 2D-SiCf/SiC composites in air at high temperatures
View tableView in ArticleTable 3. Tensile creep properties of 2D-SiCf/SiC composites in air at high temperatures
Specimen Tempera- ture/℃ Stress/ MPa Steady-state creep strain rate/s-1 Creep rupture time/h Creep strain/% 2D-SiCf/SiC 1200 100 1.86×10-10 >560 0.20 1200 110 4.95×10-10 >560 0.23 1200 120 2.16×10-9 42 0.18 1200 140 8.45×10-7 0.1 0.21 1300 90 5.62×10-10 >500 0.28 1300 100 1.73×10-9 70 0.20 1300 120 1.86×10-8 6 0.28 1400 80 1.32×10-9 88 0.33 1400 100 1.46×10-8 1.6 0.57 CVI-SiCf/SiC[ 13 ]1300 75 2.3×10-9 111.1 — 1300 90 6.2×10-8 33.4 — 1300 120 3.6×10-7 0.83 — 1300 150 3.0×10-6 0.14 — MI-SiCf/SiC[ 15 ]1204 125 3.0×10-11 >1000 0.25 1204 140 2.3×10-10 >1000 0.31 1204 150 — 82.1 0.29
Table 4. Residual tensile properties of 2D-SiCf/SiC after creeping
View tableView in ArticleTable 4. Residual tensile properties of 2D-SiCf/SiC after creeping
σUTS/MPa E/GPa σPLS/MPa ε/% As-received 282 273 115 0.57 Crept 1200 ℃/100 MPa 211 — — — 1200 ℃/110 MPa 173 209 89 0.25 1300 ℃/90 MPa 138 157 55 0.17
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Kaikai JING, Haoyang GUAN, Siyu ZHU, Chao ZHANG, Yongsheng LIU, Bo WANG, Jing WANG, Mei LI, Chengyu ZHANG. Tensile Creep Behavior of Cansas-II SiCf/SiC Composites at High Temperatures[J]. Journal of Inorganic Materials, 2023, 38(2): 177
Paper Information
Category: EDITORIAL
Received: Jul. 29, 2022
Accepted: --
Published Online: Sep. 27, 2023
The Author Email: JING Kaikai (2247436229@qq.com)
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