Reports of the measurement of elastic properties of 51XX series steels for the heat treatment distortion project

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We have measured the temperature dependence of the elastic constants of the 51XX series steels [gear steels] for a range of phases. At RT the normalized steel (pearlite) has the highest value of the moduli, the bainite phase the next highest, and martensite the lowest. Extrapolation of the austenite suggests that at RT austenite has lower moduli than martensite. For all the grades and phases of steels examined, the behavior of the elastic constants is similar: a curve could be drawn for each of the moduli from all the phases and all the grades would not deviate by more than ... continued below

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64 p.

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Darling, T.; Migliori, A.; Armstrong, P.E.; Vaidya, R.; Scherer, C. & Lowe, T. September 1, 1997.

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We have measured the temperature dependence of the elastic constants of the 51XX series steels [gear steels] for a range of phases. At RT the normalized steel (pearlite) has the highest value of the moduli, the bainite phase the next highest, and martensite the lowest. Extrapolation of the austenite suggests that at RT austenite has lower moduli than martensite. For all the grades and phases of steels examined, the behavior of the elastic constants is similar: a curve could be drawn for each of the moduli from all the phases and all the grades would not deviate by more than {+-}4%. The normalized phase (100% pearlite in 5180) is stable up to 900 C. Bainite is stable up to 500 C. Martensite starts to change above 150 C as it tempers or strain relieves; once this is complete, the martensite moduli increase to similar values to bainite. Extrapolations are discussed. Behavior in lower carbon steels (5140, 5120) should conform to above; there is no explanation for the anomalous behavior of the quenched 5120 steel.

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64 p.

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OSTI as DE97008344

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  • Resonance meeting, Pacific Grove, CA (United States), 11-15 May 1997

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  • Other: DE97008344
  • Report No.: LA-UR--97-1954
  • Report No.: CONF-9705151--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 520740
  • Archival Resource Key: ark:/67531/metadc693031

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 26, 2016, 4:08 p.m.

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Darling, T.; Migliori, A.; Armstrong, P.E.; Vaidya, R.; Scherer, C. & Lowe, T. Reports of the measurement of elastic properties of 51XX series steels for the heat treatment distortion project, article, September 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc693031/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.