Results 11 to 20 of about 1,865,833 (300)

Effect of Q&P Process on 0.15C-MnSi Steels [PDF]

open access: yesJournal of Materials Science and Engineering A, 2016
The present study is focused on analyzing the effect of Mn amount on two experimental steel compositions, specially designed for Q&P (Quenching and Partitioning), 0.15C-2.5Mn-1.5Si and 0.15C-3Mn-1.5Si without significant contribution of Al. Two-Step Q&P thermal treatments were performed at laboratory scale in a quenching dilatometer Bähr DIL805A/D. The
DI SCHINO, ANDREA   +4 more
openaire   +5 more sources

Unconventional Heat Treatment of Spring Steel by Q P Process [PDF]

open access: yesSixth International Conference On Advances in Mechanical, Aeronautical and Production Techniques - MAPT 2016, 2016
Newly developed methods for heat treatments and any necessary thermomechanical working have led to the achievement of excellent properties for new types of multiphase structures.
Mašek, Bohuslav   +4 more
openaire   +3 more sources

The Analytic Process of Q Methodology [PDF]

open access: yesAsian Journal of University Education, 2018
The purpose of this article is to describe the analytic process of a method of data collection known as Q Methodology. This method is an alternative method in collecting data especially suited to research on “points of views” (Coogan & Herrington, 2011 ...
Siti Maftuhah Damio
doaj   +1 more source

Influence of changes in alloying elements distribution and retained Austenite (RA) on mechanical properties of high boron alloy during quenching and partitioning(Q&P) process

open access: yesJournal of Materials Research and Technology, 2022
The quenching and partitioning (Q&P) process has been adopted innovatively to improve the toughness and wear resistance of Fe-0.44C-1.54B-3.97Mn-0.79Al-0.95Si alloy, and the microstructure, distribution of alloying elements, mechanical properties and dry
Zhao Li   +4 more
doaj   +1 more source

Dilatometric identification of bainitic transformation during Q-P processing of 42SiCr medium carbon steel [PDF]

open access: yesManufacturing Technology, 2020
Q-P process is one of the latest techniques for heat treatment of high-strength steels with increased silicon levels. It is believed to be based on diffusion and migration of carbon between martensite and untransformed austenite, where the latter becomes enriched with carbon, and therefore becomes thermodynamically stable. However, the question remains
Jeníček, Štěpán   +3 more
openaire   +3 more sources

Modelling and analysis of equivalent SISO d-q impedance of grid-connected converters

open access: yes, 2021
Small-signal stability of three-phase grid-connected converters can be analysed by using the impedance-based method in d-q frame. Based on this approach, the d-q impedance models of both source and load subsystems are represented with 2-by-2 matrices ...
Khodamoradi A.   +3 more
core   +1 more source

Effect of hot stamping and quenching & partitioning process on microstructure and mechanical properties of ultra-high strength steel

open access: yesMaterials Research Express, 2021
In order to better achieve the purpose of automobile lightweight, hot stamping and quenching & partitioning (HS-Q&P) process has become a hot research focus. This process includes a hot stamping followed by a controlled quenching and partitioning process.
Cainian Jing   +5 more
doaj   +1 more source

Effects of Compositional Inhomogeneity on the Microstructures and Mechanical Properties of a Low Carbon Steel Processed by Quenching-Partitioning-Tempering Treatment

open access: yesCrystals, 2022
Quenching-partitioning-tempering (Q-P-T) heat treatment is a relatively novel approach to attain excellent ductility in high-strength steels. In the present work, the microstructural evolution and the mechanical properties of a low carbon microalloyed ...
Ning Zhong   +6 more
doaj   +1 more source

A characterization of equivalent martingale measures in a renewal risk model with applications to premium calculation principles

open access: yesModern Stochastics: Theory and Applications, 2020
Generalizing earlier work of Delbaen and Haezendonck for given compound renewal process S under a probability measure P we characterize all probability measures Q on the domain of P such that Q and P are progressively equivalent and S remains a compound ...
Nikolaos D. Macheras   +1 more
doaj   +1 more source

A Continuous Time GARCH Process of Higher Order [PDF]

open access: yes, 2005
A continuous time GARCH model of order (p,q) is introduced, which is driven by a single Lévy process. It extends many of the features of discrete time GARCH(p,q) processes to a continuous time setting.
Lindner, Alexander M.   +2 more
core   +1 more source

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