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Neutronographic Residual Stress Analysis for Materials With Depth Gradients of the Strain Free Lattice Parameter d0 for the Example of a Case-Hardened Steel 20MnCr5.
- Source :
- Metallurgical & Materials Transactions. Part A; Sep2023, Vol. 54 Issue 9, p3448-3460, 13p
- Publication Year :
- 2023
-
Abstract
- In the present work, ring-shaped samples made from steel 20MnCr5 were low-pressure carburized (LPC) and subsequently hardened by gas quenching (case-hardened). This results in a near-surface gradient in chemical composition, microstructure- and hardness distribution, as well as a three-dimensional residual stress (RS) distribution, which was investigated by neutron diffraction. Near-surface RSs in the ferrite-/martensite- and austenite phase are additionally determined by X-ray diffraction. It is shown that the chemical gradient has an influence on the chosen d 0 strategy and how such a reference sample should be extracted. If near-surface RS values are to be determined by neutron diffraction, the pseudo-strain effect must be taken into account. For this purpose, a suitable approach using the "open source" software SIMRES and STRESSFIT is also presented. By combining neutron and X-ray diffraction data, a complete RS distribution over the whole sample can be obtained. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10735623
- Volume :
- 54
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Metallurgical & Materials Transactions. Part A
- Publication Type :
- Academic Journal
- Accession number :
- 169702311
- Full Text :
- https://doi.org/10.1007/s11661-023-07076-y