Summary
Brief consideration is given to several mechanical tests for the measurement of metal formability. The compression test is considered in some detail, and its usefulness in the calculation of forming limit lines and as a source of information on the feasibility of forming processes is demonstrated.
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References
M.G. Cockroft and D.J. Latham, “Ductility and Workability of Metals,” J. Inst. Metals, 96 (1968), pp. 33–39.
S.M. Woodall and J.A. Schey, “Determination of Ductility for Bulk Deformation,” Formability Topics — Metallic Materials, ASTM STP 647, edited by B.A. Niemeier, A.K. Schmeider, and J.R. Newby, American Society for Testing and Materials, (1978), pp. 191–205.
H.A. Kuhn, “Workability Testing and Analysis for Bulk Forming Processes,” Formability Topics — Metallic Materials, ASTM STP 647, edited by B.A. Niemeier, A.K. Schmieder, and J.R. Newby, American Society for Testing and Materials, (1978), pp. 206–219.
H.L.D. Pugh and D. Green, “The Effect of Hydrostatic Pressure on the Plastic Flow and Fracture of Metals,” Proc. Inst. Mech. Eng., 179 (1965), pp. 415–438.
J.A. Schey, “A New Workability Test,” North American Metalworking Research Group Conference, (1973), pp. 101–106.
G.E. Dieter, Mechanical Metallurgy, McGraw-Hill Kogakusha Ltd., Second Edition, (1977), pp. 329–388, 576, 684–686, 696–697.
A. Gittins, L.G. Northway, and CM. Sellars, “A Study of Strength and Ductility Using Hot Impact Tension Tests,” Journal of Materials, JMLSA, 7 (1972), pp. 155–166.
A.S. Argon, J. Im, and R. Safoglu, “Cavity Formation from Inclusions in Ductile Fracture,” Met. Trans., 6A, (1975), pp. 825–837.
A.S. Argon and J. Im, “Separation of Second Phase Particles in Spheriodized 1045 Steel, Cu-0,6, Pct. Cr. Alloy and Maraging Steel in Plastic Straining,” Met. Trans., 6A (1979), pp. 839–851.
H.C. Rogers, “The Tensile Fracture of Ductile Metals,” Trans. Met. Soc. AIME, 218 (1969), pp. 498–505.
K. E. Puttick, “Ductile Fracture in Metals,” Phil. Mag., 4 (1959), pp. 964–969.
A.W. Thompson and P.F. Weighrauch, “Ductile Fracture: Nucleation of Inclusions,” Scripta Met., 10 (1976), pp. 205–210.
R.W. Bauer and H.G.F. Wilsdorf, “Void Inition in Ductile Fracture,” Scripta Met. (1973), pp. 1213–1220.
P. Schwellinger, “On the Mechanism of Ductile Intergranular Fracture in Al-Mg-Si Alloys,” Scripta Met., 12 (1978), pp. 899–901.
P. Schwellinger, “Reply to Discussion of Mechanism of Ductile Fracture,” Scripta Met, 13 (1979), pp. 497–498.
P. Schwellinger, “On the Fracture Mechanisms in Al-Mg-Si Alloys,” Scripta Met., 14 (1980), pp. 769–772.
P. Schwellinger, “Investigation of the Mechanisms of Ductile Intergranular Fracture in Al-Mg-Si Alloys with Special References to Void Formation,” Zeit. Metallkunde, 71 (1980), pp. 520–524.
A.W. Thompson, “Discussion of the Mechanism of Ductile Intergranular Fracture,” Scripta Met., 13 (1979), pp. 329–330.
N.H. Palakowski, “The Compression Test in Relation to Cold Rolling,” J. Iron Steel Inst., 163 (1949), p. 250.
L.H. Martin and L.O. Bieber, “Methods of Evaluating Hot Malleability of Nickel and High Alloys,” Non-Ferrous Rolling Practice, New York: American Institute of Mining and Metallurgical Engineers (1948), p. 15.
V.G. Osipov, “Evaluation of the Degree of Deformation in Tests in Simple Compression,” Trud. Inst. Metallurg. AN, USSR, 9 (1962), p. 61.
D.J. Latham, M.G. Cockroft, and E.S. Tweedie, “An Assessment of the Compression Test for Determining Mechanical Properties,” Metal Forming (1968), pp. 196–200.
H. Kudo and K. Aoi, “Effect of Compression Test upon Fracturing of a Medium Carbon Steel — A Study on Cold Forgeability Test,” Part II, J. Japan Soc. Tech. Plasticity, 8 (1967), pp. 17–27.
S. Kobayashi, “Deformation Characteristics and Ductile Fracture of 1040 Steel in Simple Upsetting of Solid Cylinders and Rings,” Trans. ASME — J. Engineering for Industry (5) (1970), pp. 391–399.
P.F. Thomason, “The Use of Pure Aluminum as an Analogue for the History of Plastic Flow, in Studies of Ductile Fracture Criteria in Steel Compression Specimens,” Int. J. Mech. Sci., 10 (1968), pp. 501–518.
H.A. Kuhn and P.W. Lee, “Strain Instability and Fracture at the Surface of Upset Cylinders,” Met. Trans., 2 (1971), pp. 3197–3202.
S.K. Samanta, “On the Limit of Plastic Deformation in Compression of Circular Cylinders,” Int. J. Fracture, 11 (1975), pp. 301–313.
S. Kobayashi, C.H. Lee, and S.I. Oh, “Workability Theory of Materials in Deformation Processes,” USAF Materials Laboratory — Technical Report, AFML-TR, 73, 192 (5) (1973).
S.I. Oh and S. Kobayashi, “Workability of Aluminum Alloy 7075-T6 in Upsetting and Rolling,” Trans. ASME-J. Eng. Ind. (1976), pp. 800–806.
P.W. Lee and H.A. Kuhn, “Fracture in Cold Upset Forging — A Criterion and Model,” Met. Trans. 4 (1974), pp. 969–974.
H.A. Kuhn, P.V. Lee, and T. Erturk, “A Fracture Criterion for Cold Forming,” ASME, J. Eng. Mat. Tech. (1973), pp. 213–218.
S.P. Keeler, “Determination of Forming Limits in Automotive Stampings,” Sheet Metal Ind. (9) (1965), pp. 683–691.
S.P. Keeler, “Understanding Sheet Metal Formability, Part IV — Predicting Forming Limits,” Machinery (5) (1968), pp. 92–99.
G.M. Goodwin, “Applications of Strain Analysis to Sheet Metal Forming Problems in the Press Shop,” La Metallurgia Italiana (1968), pp. 767–774.
T. Erturk, “Measurement of Bulk Formability and the Effect of Second Phase Particles. An Application of the Upset Test,” Mechanical Behavior of Materials, edited by K.J. Miller and R.F. Smith, Vol. 2, Pergamon Press, (1979), pp. 653–662.
H.A. Kuhn, “Forming Limit Criteria — Bulk Deformation Processes,” Advances in Deformation Processing, 21st Sagamore Army Materials Research Conference, Syracuse University Press, (1975), pp. 159–186.
E. Basli, “Effect of Aging on Formability of Al Alloys,” M.Sc. Thesis, Middle East Technical University, Ankara, Turkey, August 1979.
A.T. Male and M.G. Cockroft, “A Method for the Determination of the Coefficient of Friction of Metals Under Conditions of Bulk Plastic Deformation,” J. Inst. Metals, 93 (1964–1965), pp. 38–47.
H.A. Kuhn and S.K. Suh, “Metal Flow Studies for Workability Analysis of Forging Processes,” Third North American Metalworking Conference, Carnegie Press, (1975), Pittsburgh, pp. 262–276.
H.A. Kuhn, S.K. Suh, and M.L. Robinson, “Metal Flow Studies for Powder Forging,” Progress in Powder Metallurgy, 31 (1975), pp. 159–174.
P.F. Thomason, “Tensile Plastic Instability and Ductile Fracture Criteria in Uniaxial Compression Tests,” Int. J. Mech. Sci., 22 (1969), pp. 187–198.
D.C. Shah, “Use of Metallic Materials to Model the Flow and Fracture of Steel in Cold Upsetting,” Mechanical Working and Steel Processing, 12 (1974), The Metallurgical Society of AIME, New York, pp. 285–299.
T. Erturk and E. Kazazoglu, “Effect of Aging on Bulk Formability of Aluminum Alloys,” Formability of Metallic Materials, — 2000 A.D., ASTM STP-753, edited by J. R. Newby and B. A. Niemeier, 1982, pp. 19–34
E. Ulvan, “Effect of Aging Temperature on Bulk Formability of Al-Zn-Mg Alloys,” M.Sc. Thesis, Middle East Technical University, Ankara, Turkey, June 1981.
T. Erturk, W.L. Otto, and H.A. Kuhn, “Anistropy of Ductile Fracture in Hot-Rolled Steel Plates — An Application of the Upset Test,” Met. Trans., 5 (1974), pp. 1883–1886.
S.K. Suh and H.A. Kuhn, “Anistropy of Ductile Fracture in Hot-Rolled Steel Plates — Complementary Results from Bend Tests,” Met. Trans., 6A (1975), pp. 2157–2159.
T. Erturk, “Anisotropy of Bulk Forming Limits in Hot-Rolled Steel Bars,” Met. Trans., 12A (1981), pp. 743–747.
T. Erturk, “Anisotropy of Bulk-Formability in 2024-T351 Aluminum Plates and Bars,” 5th International Conference on Strength and Fracture of Materials, Cannes, France, April 1981.
H.L. Gaigher, M.J. Koczak, and A. Lawley, “Strain Instability and Fracture in Sintered Compacts,” Met. Trans., 3 (1972), pp. 2539–2542.
G. Fitzsimons, H. A. Kuhn, and R. Venkateshwar, “Deformation and Fracture Testing for Hot Working Processes,” J. Metals, 33(5) (1981), pp. 11–17.
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Mr. Ulvan obtained his BSc and MSc in metallurgical engineering from the Middle East Technical University, Ankara, Turkey in 1979 and 1981, respectively. He has been working towards his doctorate in metallurgy since 1981 at the University of the Witwatersrand. He is a student member of The Metallurgical Society of AIME.
Dr. Koursaris obtained his BSc in metallurgy from the University of Aston in Birmingham, United Kingdom, in 1973 and his PhD from the University of the Witwatersrand in 1981. He has been lecturing in physical and fabrication metallurgy since 1979, and is a member of several professional societies including The Metallurgical Society of AIME.
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Ulvan, E., Koursaris, A. Metal Formability in Bulk Deformation Processes. JOM 35, 20–26 (1983). https://doi.org/10.1007/BF03339184
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DOI: https://doi.org/10.1007/BF03339184