Abstract: In this paper, the
comprehensive relationships among TNDT, A and D/-1/2 are
investigated for smooth tensile specimens of steel 38CrA. The
following equations are obtained. According to the equations
mentioned above, a three dimensional cold short fracture
controlling and mechanism diagram is established. It can be used
not only in the analysis, diagnosis, calculation, controlling
and prevention of cold short fracture, but also in the design,
choice of materials and safe evaluation of parts at low
temperature.
Key words:
Steel Cold short fracture Controlling mechanism diagram
* This project is supported by National Natural Science Foundation of
China Beijing, Funds of State Key Laboratory for Fatigue and Fracture of
Materials and Aeronautical Science Foundation. Manuscript received on
December 25, 1991; revised manuscript May 20, 1991
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