Fracture Toughness / Fracture Energy Data for Ceramics

NIST Standard Reference Database 138


Reference:

Reference: NIST Structural Ceramics Database

Other material collections: Property Data Summaries



Other Toughness materials

AlSiMag 614 ( Al2O3 )

Material Summary:

                      [Ref. 1]         [Ref. 2]         [Ref. 3]         [Ref. 4]         [Ref. 5]
Manufacturer........: Am. Lava Corp.   Am. Lav. Corp.   3M Co.           3M Co            3M Co.
Material Designation: AlSiMag 614      AlSiMag 614      AlSiMag 614      AlSiMag 614      AlSiMag 614
Material Form.......: Polycrystal      Polycrystal      Polycrystal      Polycrystal      Polycrystal
Composition.........: 96 % Al2O3   Al2O3        96% Al2O3    Al2O3        Al2O3
  (mass fraction)
Processing..........: 

References:

[1] S.W. Freiman, K. R. McKinney, and H. L. Smith, "Slow Crack Growth in Polycrystalline Ceramics" Fracture Mechanics of Ceramics, Vol. 2, 659-676 (1974).

[2] J. J. Mecholsky, S. W. Freiman, and R. W. Rice, "Fracture Surface Analysis of Ceramics" Journal of Materials Science, Vol. 11, pp. 1310-1319 (1976).

[3] G. K. Bansal, "Effects of Ceramic Microstructure on Strength and Fracture Surface Energy" Microstructures, pp. 860-871 (1976).

[4] D. Munz, R. T. Bubsey, and J. L. Shannon, "Fracture Toughness Determination of Al2O3 Using Four-Point-Bend Specimens with Straight-Through and Chevron Notches" Journal of the American Ceramic Society, Vol. 63, No. 5-6, pp. 300-305 (1980).

[5] D. K. Shetty, A. R. Rosenfield, and W. H. Duckworth, "Fracture Toughness of Ceramics Measured by a Chevron-Notch Diametral-Compression Test" Journal of the American Ceramic Society, Vol. 68, No. 12, pp. C-325-C-327 (1985).

Property Table:

Temperature = 23 °C
Grain    Porosity    Fracture      Fracture   Measurement  Measurement  Comments
Size                 Toughness     Energy     Method       Environment
[µm]       [%]       [MPa·m1/2]     [J/m2] 
------   --------   ------------   ---------  -----------  -----------  ----------------------------
 4 [2-12]                3.2          17        AMDCB         air        Ref. 1
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 2-40                                 20        AMDCB         air        Ref. 2; E = 300 GPa
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   5         5                        23.2      SENB          air        Ref. 3; E = 318 GPa;
                                                                                 hot pressed and sintered
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10 [2-30]                3.49                   CNB           air        Ref. 4; KIc calculated using
                                                                                 Buhm's slice method
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                         3.3                    CNDCT         drg N2     Ref. 5
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