Handbook Fractography (1998) WW Part 13 ppsx

... is approximately 7 μ m. Note also that a majority of the dimples contain one or more particles probably particles of the CuAl 2 phase of the eutectic. See Fig. 1085 for a higher-magnification ... eu tectic alloy was highly ductile. Arrow points to a spheroidal particle that should be of the CuAl 2 phase; most of the surface of this particle appears to be detached from the matrix. SEM, 7...

Ngày tải lên: 11/08/2014, 04:21

... forged hardened steel rolls (Ref 125, 126, 127, 128, 129, 130 ), bearings (Ref 131 , 132 , 133 , 134 , 135 ), railroad rails (Ref 136 , 137 , 138 , 139 ), and wheels, for example, crane wheels (Ref 140, ... increases in particle density. Other studies demonstrated that tensile ductility improves as the volume fraction of second-phase particles decreases (Ref 51, 52). Particle siz...

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... such terms as macrofractography and microfractography for distinguishing the visual and low magnification (≤ 25×) from the microscopic, and optical fractography and electron fractography for distinguishing ... also G.C. Hennings, Adolf Marten, Handbook of Testing of Materials, Part I, John Wiley & Sons, 1899, p 103, 105 History of Fractography Development of Microfractography...

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... B.V. Whiteson, Electron Fractography Handbook, MCIC-HB- 08, Metals and Ceramics Information Center, 1976, p 3-5 213. T. Takasugi and D.P. Pope, Metall. Trans. A, Vol 13A, 1982, p 1471 214. ... 1975, p 214, 606 198. A. Phillips, V. Kerlins, R.A. Rawe, and B.V. Whiteson, Electron Fractography Handbook, MCIC-HB- 08, Metals and Ceramics Information Center, 1976, p 3-8 199. J....

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... A. Phillips et al., Electron Fractography Handbook, AFML-TDR-64- 416, Air Force Materials Laboratory, 31 Jan 1965 42. A. Phillips et al., Electron Fractography Handbook, MCIC-HB- 08, Air Force ... heated to 1205 and 137 0 °C (2200 and 2500 °F). (a) and (b) Specimens heated to 137 0 °C (2500 °F). (c) and (d) Specimens heated to 1205 °C (2200 °F). (a) 135 ×. (b) 680 ×. (c) 135 × (...

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... 6th International Conference on Fracture, New Delhi, India, 1984, p 137 1 -137 8 10. E.E. Underwood and K. Banerji, Fractals in Fractography, Mater. Sci. Eng., Vol 80, 1986, p 1-14 11. B.B. Mandelbrot, ... ' i s S R A = (Eq 13) or, in an alternate form, as: 1969, p 243-349 30. D. Broek, Some Contributions of Electron Fractography to the Theory of Fracture, Int. Met. Re...

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... cleavage (right). TEM replica, 5000× (J.M. Morris, U.S. Department of Transportation) Figure 211 is a polished and etched cross section of a partially flame-hardened crane gear of AISI 1045 steel ... horizontal ridges in Fig. 309 result from combined stage I/stage III propagation. 13 (J.M. Morris, U.S. Department of Transportation) Higher-magnification views of the fractured ASTM A230...

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... suggestions of partly formed dimples are present at a few locations. In Fig. 706, fatigue striations are much less regular than in Fig. 705; again, there are suggestions of partly formed dimples. ... transformed to mixed (Cr,Fe) 23 C 6 and (Cr,Fe) 7 C 3 carbides. Balance of thickness has partially transformed, particularly in the vicinity of pores. Carbon content of the bulk material wa...

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... Fracture is transgranular with multiple surface origins. SEM, 13 . Fig. 834: Fracture surface after stress-rupture testing at 896 MPa (130 ksi). Mechanism: salt corrosion-assisted intergranular ... pressed IN-738 tested in a salt environment (40% MgSO 4 , 59% Na 2 SO 4 , 1% NaCl) at 705 °C (130 0 °F). Samples heat treated 2 h at 1120 °C (2050 °F), air cool; 14 h at 845 °C (1550 °F), air...

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