Author
Jiří Man
Other affiliations: Freiberg University of Mining and Technology
Bio: Jiří Man is an academic researcher from Academy of Sciences of the Czech Republic. The author has contributed to research in topics: Slip (materials science) & Lüders band. The author has an hindex of 19, co-authored 60 publications receiving 1300 citations. Previous affiliations of Jiří Man include Freiberg University of Mining and Technology.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, surface relief is formed mostly by ribbon-like extrusions whose height in a grain was found to be proportional to the thickness of the corresponding persistent slip bands.
134 citations
25 Jun 2003-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the surface relief evolution at emerging persistent slip bands (PSBs) in individual grains of polycrystalline 316L stainless steel cycled with constant plastic strain amplitude was studied.
Abstract: Atomic force microscopy was applied to study the surface relief evolution at emerging persistent slip bands (PSBs) in individual grains of polycrystalline 316L stainless steel cycled with constant plastic strain amplitude. Quantitative data on the changes of the surface topography of persistent slip markings (PSMs) and on the kinetics of extrusion growth during the fatigue life of smooth specimens were obtained. The extrusion height can be assessed by a direct observation of the metal surface and the intrusion depth using the plastic replica technique. The first PSMs appear after the initial hardening (0.1–0.25% of Nf). PSBs can be active in the whole period of fatigue life in grains in which no cracks develop. The initial rapid growth of extrusions is followed by a period of stable linear growth up to the end of the fatigue life. The width of extrusions, corresponding to the thickness of the emerging PSBs quickly stabilizes and remains constant during the whole fatigue life. The experimental results are discussed in terms of recent vacancy models of surface relief evolution.
114 citations
TL;DR: In this paper, the true surface relief corresponding to persistent slip markings emerging from persistent slip bands on fatigued polycrystalline austenitic and ferritic stainless steels was found.
97 citations
TL;DR: In this article, a combination of atomic force microscopy and high-resolution scanning electron microscopy was applied to the study of surface relief evolution at emerging persistent slip bands (PSBs) in individual grains of ferritic X10CrAl24 stainless steel cycled with constant plastic strain amplitude.
79 citations
TL;DR: In this article, the early microstructural changes leading to fatigue crack initiation in cyclically strained polycrystals (nickel, 316L steel) were investigated in detail using electron channeling contrast imaging (ECCI) technique (concurrently in the FIB crosssection and on the specimen surface) and simultaneously with the surface relief topography using transmission electron microscopy (TEM) of thin surface foils prepared by in situ lift-out technique.
77 citations
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31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.
3,792 citations
TL;DR: In this paper, the authors focus on experimental observations of strain localization and the theory and numerical analysis of both slip irreversibilities and low energy configuration defect structures, which are the early signs of damage during cyclic loading.
495 citations
TL;DR: In this article, microstructure-sensitive fatigue modeling is proposed for Ni-base superalloys, gear steels, and α-β Ti alloys, with focus on the individual grain scale as the minimum length scale of heterogeneity.
447 citations
TL;DR: In this paper, the role of microstructural features such as grain size, texture, porosity, non-metallic inclusion in the fatigue crack initiation process and the manners by which these micro-structural effects affect the shape of the stress-life curves are examined.
363 citations
TL;DR: In this article, a gradient nanostructured (GNS) surface layer was formed on AISI 316L stainless steel and the mean grain size is ∼30nm in the topmost surface layer and increases with depth.
363 citations