Abstract
International Standard ISO 6892–2 maintains that strain rate variations can induce the measurement uncertainty of mechanical properties in tensile testing, which will imperil the reliability of tension tests. In this paper, the measurement uncertainty of reduction in area relative to strain rate, called as strain rate embrittlement, is first described experimentally for some micro-alloy steels. Then the measurement uncertainty is clarified based on microscopic theory of elastic deformation in metals. It is shown that the elastic deformation of tension test induces the segregation of impurities to grain boundaries and the relevant embrittlement which produces the measurement uncertainty of reduction in area in tensile testing. This work gives a theoretical basis for correcting the present tension testing system to avoid the measurement uncertainty of mechanical property.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
International Standard, ISO 6892–2, Metallic Materials--Tensile Testing--Part 2: Method of Test at Elevated Temperature, First Edition 2011–02–15.
T D Xu et al., “Unified mechanism of intergranular embrittlement based on non-equilibrium grain boundary segregation,” Inter. Mater. Rev., 58 (5) (2013) 263–295
T D Xu et al., “Measurement uncertainty of metallic ductility in tensile tests: intermediate temperature embrittlement and strain rate embrittlement”, Acta Phys. Sin. Vol. 63, No.22 (2014) 228101 (1–10)
T D Xu et al., “The measurement uncertainty of reduction in area of metals in tensile testing system,” Measurement, Vol. 66 (2015) 1–9.
Stephenp Timoshenko, History of Strength of Materials (The McGraw-Hill Book Company, Inc. United States of America, 1953). 1–20.
Sun D S, Yamane T, Hirao K, “Intermediate-temperature brittleness of a ferritic stainless steel,” J. Mater. Sci. 26 (1991), 689
Sun D S, Yamane T, Hirao K, “Influence of thermal histories on intermediate temperature embrittlement of an Fe-17Cr alloy,” J. Mater. Sci. 26, (1991) 5767–5769
C. Nagasaki, Aizawa A and Kihara J, “Influence of manganese and sulfur on hot ductility of carbon steels at high strain rate,” Trans. ISIJ, 27, (1987), 506–512
H G Suzuki, “Strain rate dependence of Cu embrittlement in steels,” ISIJ Inter. 37, (1997) 250–254
T D Xu “A model for intergranular segregation/dilution induced by applied stress,” J Mater Sci. 35, (2000) 5621–5628
T D Xu, “Creating and destroying vacancies in solids and non-equilibrium grain-boundary segregation,” Phil Mag. 83 (2003), 889–899
T D Xu, B Cheng, “kinetics of non-equilibrium grain boundary segregation” Prog Mater Sci. 49, (2004), 109–208
T D Xu, “Grain-boundary anelastic relaxation and non-equilibrium dilution induced by compressive stress and its kinetic simulation” Phil Mag. 87(10), (2007), 1581–1599
T Shinoda, T Nakamura., “The effects of applied stress on the intergranular phosphorus segregation in a chromium steel,” Acta Metall, 29, (1981), 1631–1636
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS
About this paper
Cite this paper
Xu, T., Shao, C., Wang, K. (2016). Measurement Uncertainty of Mechanical Property in Tensile Tests: Strain Rate Embrittlement of HSLA Steels. In: HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48767-0_23
Download citation
DOI: https://doi.org/10.1007/978-3-319-48767-0_23
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48614-7
Online ISBN: 978-3-319-48767-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)