Creep behavior of Nextel™720/alumina–mullite ceramic composite with ±45° fiber orientation at 1200°C

Creep of Nextel™ 610 Fiber at 1100°C in Air and in Steam

“…Oxide–oxide CMCs exhibit damage tolerance combined with inherent oxidation resistance, and have good high‐temperature mechanical properties in air . However, recent studies show dramatic degradation of mechanical performance of oxide–oxide CMCs at elevated temperature in steam . When a CMC is subjected to mechanical loading at elevated temperature in steam, multiple degradation and failure mechanisms may operate simultaneously.…”

“…3,[6][7][8][9][10] However, recent studies show dramatic degradation of mechanical performance of oxide-oxide CMCs at elevated temperature in steam. [11][12][13][14][15][16][17][18][19][20] When a CMC is subjected to mechanical loading at elevated temperature in steam, multiple degradation and failure mechanisms may operate simultaneously. These may include environmentally assisted subcritical crack growth, grain growth, and matrix densification, and loss of SiO 2 as Si (OH) 4 .…”

Cyclic creep and recovery behavior of Nextel™720/alumina ceramic composite at 1200°C

“…Additional sintering of the matrix during the aging treatments was considered to be associated predominantly with Al 2 O 3 . Results or previous studies by Ruggles-Wrenn et al [28,32,33] suggest that the sintering of the matrix is accelerated in the presence of steam.…”

Creep in Interlaminar Shear of a Nextel™720/aluminosilicate Composite at 1100°C in Air and in Steam

“…Moreover, oxide–oxide CMCs have displayed excellent high‐temperature mechanical properties . However, recent studies revealed dramatic degradation of mechanical performance of oxide–oxide CMCs and their constituents at elevated temperature in steam environment . When a CMC is subjected to mechanical loading at elevated temperature in steam, multiple degradation and failure mechanisms may operate simultaneously.…”

“…Numerous recent studies investigated mechanical behavior of oxide–oxide CMCs at elevated temperature . Efforts to assess the life‐limiting behaviors of oxide–oxide CMCs have been focused mainly on the fiber‐dominated properties.…”