Topic
Martempering
About: Martempering is a research topic. Over the lifetime, 126 publications have been published within this topic receiving 859 citations.
Papers published on a yearly basis
Papers
Book•
1 Jan 2013
TL;DR: The ASM Handbook, Volume 4A, Steel Heat Treating Fundamentals and Processes is the first of multiple volumes on heat treating as discussed by the authors, which provides in-depth coverage of the many steel heat treating processes.
Abstract: Coverage on heat treating in the ASM Handbook series is being expanded into several volumes, and ASM Handbook, Volume 4A, Steel Heat Treating Fundamentals and Processes is the first of multiple volumes on heat treating. Volume 4A introduces the basics of steel heat treating and provides in-depth coverage of the many steel heat treating processes. Coverage includes: Physical metallurgy of steel heat treatment Fundamentals of steel hardness and hardenability Practical aspects of hardenability as a key criterion in the selection of steel Hardenability calculations and the use of hardenability data Fundamentals and practical aspects of steel quenching Expanded coverage on quenching processes Updates and expansion on annealing, tempering, austempering and martempering New articles on cleaning, subcritical annealing, austenitising, and quench partitioning of steel heat treatment Significant expansion on the fundamental and applied aspects of surface hardening by applied energy, carburising, carbonitriding, nitriding, and diffusion coatings Editors and authors have also added charts, examples, and practical reference data for application purposes.
178 citations
Book•
1 Jun 1996
TL;DR: In this paper, the authors present a review of the concepts behind graphically depicting decomposition of austenite, the time-temperature transformation (TTT) diagram, and the ways of calculating hardenability from chemical composition and grain size.
Abstract: This invaluable resource book will help you immeasurably in determining which steel and heat treatment process will best meet your needs. It reviews current methods, both quantitative and correlative, in determining hardness or strength. You get a brief review of the concepts behind the common method of graphically depicting decomposition of austenite, the time-temperature transformation (TTT) diagram. It's followed by the ways of calculating hardenability from chemical composition and austenite grain size. Heat transfer during quenching is also discussed, including temperature-time curves for various shapes like bars and plates. Subsequent tempering is analyzed for you in great detail along with austentizing, annealing, normalizing, martempering, austempering and intercritical heat treatment. Thoroughly up-to-date, this book also covers computer modeling of heat treatment processes.
132 citations
TL;DR: In this paper, the influence of pre-existing martensite on the transformation kinetics, morphology and crystallographic orientation of subsequently formed bainite using EBSD and atom probe tomography was investigated focusing on the influence.
116 citations
TL;DR: In this article, the authors determined the kinetics of the austenite transformation over the temperature range 250-500°C using a transmission electron microscopy (TEM) method.
55 citations
31 Oct 2016-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, a novel high-strength steel has been made through thermo-mechanical controlled processing with the finish rolling temperature of 750°C followed by air cooling, which reveals ferrite-bainite-martensite microstructures with a good combination of strength and ductility.
Abstract: A novel high-strength steel has been made through thermo-mechanical controlled processing with the finish rolling temperature of 750 °C followed by air cooling. Subsequently, both partial austenitisation at 800 °C and fully austenitisation at 930 °C have been attempted for equal duration of 30 min prior to one step quenching and partitioning (Q&P) at 345 °C below M S temperature (365 °C). As-rolled steel reveals ferrite-bainite-martensite microstructures with a good combination of strength and ductility. After Q&P, all the specimens have exhibited the multiphase microstructures comprising ferrite, lath microstructure (martensite and bainite), and retained austenite with the volume fractions of up to 10.50 wt%. It is evident that partitioning for 30 min leads to good carbon enrichment (>1 wt%) of the austenite phase from the neighbouring martensite or bainite which might be due to fast partitioning kinetics and possible suppression of carbides through a combination of Si and Al additions. The attractive combination of tensile strength (921–922 MPa) and ductility (25–26% total elongation) along with low yield ratio (0.63–0.69) are attributed to ferrite and lath microstructures along with the thin film like carbon enriched retained austenite obtained after Q&P process.
54 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 3 |
| 2019 | 6 |
| 2018 | 1 |
| 2017 | 5 |
| 2016 | 7 |