Results 51 to 60 of about 1,668,663 (218)

Effect of Ni addition on bainite microstructure of low-carbon special bar quality steels and its influence on CCT diagrams

Journal of Materials Research and Technology, 2021
This work presents the effect of Ni content on the bainite morphology and in the mechanical properties of low-carbon special bar quality steels. Four steel ingots with the same base chemical composition, having only Ni content as their main difference ...
José Britti Bacalhau, Conrado Ramos Moreira Afonso   +1 more
doaj   +1 more source

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source

Effect of Si on the acceleration of bainite transformation by pre-existing martensite

, 2016
Bainite transformation was investigated focusing on the influence of pre-existing martensite on the transformation kinetics, morphology and crystallographic orientation of subsequently formed bainite using EBSD and atom probe tomography. Two 1.1 wt C-3wt.
Toji, Y., Matsuda, H., Raabe, D.
core   +1 more source

Bainite Transformation in a Silicon Steel.

ISIJ International, 1997
The processes of upper bainite formation, the crystallographic aspects and the internal structure in a 1.83% silicon steel have been investigated. The T-T-T diagram is separated into two C-curves as in the case of steels containing strong carbide forming elements.
Jung, Yun Chul, Ohmori, Yasuya, Nakai, Kiyomichi, Ohtsubo, Hiroyuki   +3 more
openaire   +2 more sources

Size Effects in Residual Stress Formation during Quenching of Cylinders Made of Hot-Work Tool Steel

Advances in Materials Science and Engineering, 2015
The present work investigates the residual stress formation and the evolution of phase fractions during the quenching process of cylindrical specimens of different sizes. The cylinders are made of hot-work tool steel grade X36CrMoV5-1.
Manuel Schemmel, Petri Prevedel, Ronald Schöngrundner, Werner Ecker, Thomas Antretter   +4 more
doaj   +1 more source

Effect of Double Annealing on the Microstructure and Mechanical Properties of a Medium Manganese Steel

steel research international, EarlyView.
A double intercritical annealing strategy is proposed to tailor the multiphase microstructure and mechanical response of a medium‐Mn steel. The treatment produces an ultrafine mixture of ferrite, martensite and multiple austenite populations with graded thermal and mechanical stability, formed through austenite reversion and controlled retransformation.
Mattia Franceschi, Jose A. Jimenez, Carlos Garcia‐Mateo, Radhakanta Rana   +3 more
wiley   +1 more source

Centennial of the Diffusionless Paradigm of Bainite

, 2012
The diffusionless growth model of bainite formation was included in an international consensus in 1912 that all transformation products of austenite form by an initial transformation to martensite.
Hillert, Mats,, Borgenstam, Annika,, A. Borgenstam, M. Hillert   +3 more
core   +1 more source

In situ observation of bainitic transformation behavior in medium carbon bainitic steel

Journal of Materials Research and Technology, 2022
The bainitic transformation behavior of samples with different scales was observed with dilatometer (DIL), high-temperature laser scanning confocal microscope (LCSM), and environmental transmission electron microscope (ETEM). Results show that the bainitic transformation behavior varies according to the geometrical size of samples, and it is mainly ...
Xiaojie Zhao, Zhinan Yang, Chunlei Zheng, Fucheng Zhang, Xiaoyan Long   +4 more
openaire   +2 more sources

Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel

Metals, 2020
The effect of the initial starting microstructures on the austenite reverse transformation kinetics is thoroughly studied in low-carbon steel. The different initial starting microstructures including the ferrite + pearlite, bainite, and martensite are ...
Junhua Hou, Binbin He
doaj   +1 more source

Tailored Hardening and Isothermal Bainitizing of Additively Manufactured Nitrogen‐Enhanced Martensitic Chromium Steel

steel research international, EarlyView.
Tailored heat treatments transform additively manufactured high‐nitrogen martensitic Cr steel from austenitic as‐built condition to high‐hardness states. Isothermal bainitizing at 250°C generates an ultrafine nanostructure and achieves higher hardness than conventional hardening and tempering, highlighting a promising postprocessing route for laser ...
Philip König, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source