Results 41 to 50 of about 10,467 (294)
Ambient temperature as a trigger of preterm delivery in a temperate climate [PDF]
Journal of Epidemiology and Community Health, 2016 Background Recent evidence suggests that elevated ambient temperatures may trigger preterm delivery. Since results from studies in temperate climates are inconclusive, we investigated the association between temperature and the risk of preterm birth in Flanders (Belgium).
Bianca Cox +7 more
openaire +5 more sources
Materials Research Express, 2020 The heat treatments with different quenching and tempering temperatures were conducted to clarify the effects of Q&T (quenching and tempering) parameters on phase transformation, microstructure, precipitation, mechanical properties in a PS-30Cr2Nb ...
Jisheng Guan +4 more
doaj +1 more source
Metals, 2018 An advanced bainite rail with high strength–toughness combination was produced in a steel mill and the effects of tempering on the microstructure and properties of the bainite rail steel were investigated by optical microscopy, transmission ...
Min Zhu +5 more
doaj +1 more source
Materials Research Express, 2021 In this study, we investigated the effects of the quenching and tempering temperatures on the microstructure and mechanical properties of low-alloy wear-resistant steel NM450. The quenching temperatures were 870 °C–1200 °C, and held for 36 min.
Liang Liang +5 more
doaj +1 more source
Significant efficiency improvement of conventional tempering by a novel flash tempering technique
Journal of Materials Research and Technology, 2023 A flash tempering process has been demonstrated for low-carbon low-alloy lath martensite, which includes heating the sample to 750 °C (Ac1: 752 °C), dwelling at 750 °C for 2 s, and quenching directly to room temperature.
Chao Ding +10 more
doaj +1 more source
Effect of Tempering Temperature on the Microstructure, Deformation and Fracture Properties of an Ultrahigh Strength Medium‐Mn Steel Processed by Quenching and Tempering [PDF]
, 2023 Herein, a medium-Mn steel containing 4 wt% Mn is designed to achieve ultrahigh tensile strength and good ductility by the quenching and tempering process.
Shen, Fuhui +16 more
core +1 more source
Research Progress on Effects of Wheat Tempering Technology on Flour Quality
Liang you shipin ke-ji, 2022 Wheat tempering is an important step in wheat milling process. Appropriate tempering method is beneficial to shorten tempering time, reduce microbial content, improve the quality of flour and by-products, reduce energy consumption and save production ...
YANG Shu-lin +5 more
doaj +1 more source
Hydrogen Diffusivity and Hydrogen Traps Behavior of a Tempered and Untempered Martensitic Steel
HydrogenThe effect of tempering temperature and tempering time on the density of hydrogen traps, hydrogen diffusivity, and microhardness in a vanadium-modified AISI 4140 martensitic steel was determined. Tempering parameters were selected to activate the second,
Edgar López-Martínez +5 more
doaj +1 more source
EFFECT OF TEMPERING TEMPERATURE ON HARDNESS OF QUENCHED UNALLOYED STEEL [PDF]
, 2020 U ovom radu su opisani neki od postupaka toplinske obradbe. Pobliže je opisan postupak poboljšavanja čelika, a u eksperimentalnom dijelu je taj postupak i izvršen na ispitnim uzorcima od čelika C45.
Ćaleta, Marko
core
Kajian Pembuatan Cokelat Batang dengan Metode Tempering dan Tanpa Tempering [PDF]
, 2013 This research is aimed to improve stability of milk chocolate bars by tempering process. The making of chocolate bars consisted of two formulations, namely a higher fat bar (40%) and low fat bar (21.5%).The study includes the chocolate bar preparation ...
Eti Indarti +5 more
core +2 more sources