Results 41 to 50 of about 14,484 (149)

Study on Transformation Mechanism and Kinetics of α’ Martensite in TC4 Alloy Isothermal Aging Process

Crystals, 2020
The law of microstructure evolution and transformation mechanism of the α′ martensite decomposition during 400−600 °C were studied by the isothermal dilatometry.
Hui Yu, Wei Li, Songsong Li, Haibei Zou, Tongguang Zhai, Ligang Liu   +5 more
doaj   +1 more source

In Situ Focused Beam Reflectance Measurement (FBRM), Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) and Raman Characterization of the Polymorphic Transformation of Carbamazepine

Pharmaceutics, 2012
The objective of this work was to study the polymorphic transformation of carbamazepine from Form II to Form III in 1-propanol during seeded isothermal batch crystallization. First, the pure Form II and Form III were obtained and characterized.
Sohrab Rohani, Yingying Zhao, Ying Bao, Jingkang Wang   +3 more
doaj   +1 more source

Transformation stasis phenomenon and overall transformation kinetics of low-carbon, Nb-bearing ferrous alloy

Journal of Materials Research and Technology, 2020
To illuminate the overall transformation kinetics of low-carbon, Nb-bearing ferrous Alloy (Nb ferrous alloy), a novel method was proposed to investigate the overall transformation behavior on the basis of bainitic transformation stasis theory.
J.H Zhao, C.H Jin, Y Lai, G Yuan, X.Q Wang, K.W Zhang   +5 more
doaj   +1 more source

Stability of metastable phases: pathway-dependent transformation kinetics of the γ phase in eutectic AuGe

Materials & Design
The transformation kinetics of metastable phases into more stable phases with simultaneous variation of the phase composition is studied in metallic systems using the binary Au72Ge28 eutectic alloy as model system.
Jürgen E.K. Schawe, Štefan T. Stanko, Marc-Georg Willinger, Jörg F. Löffler   +3 more
doaj   +1 more source

Isothermic transformation in steel

, 2007
En esta investigación se evalúo el comportamiento microestructural que presenta el acero AISI –SAE 4140 al ser sometido a un austempering a 450ºC. Se muestra la influencia del tiempo de sostenimiento a la temperatura de transformación sobre el cambio en el mecanismo de nucleación de la ferrita bainítica.
Higuera Cobos, Oscar Fabián, Tristancho Reyes, José Luis, Flórez García, Luis Carlos, Tristancho-Reyes, José Luis   +3 more
openaire   +1 more source

Effects of acicular ferrites on crystallography and incomplete transformation of low-carbon low-alloy steel

Journal of Materials Research and Technology
In this study, we investigated the effects of acicular ferrite (AF) on the crystallographic and incomplete transformation characteristics of low-carbon low-alloy steel.
Binbin Wu, Zhiquan Wang, Chengjia Shang, Zhigang Yang, Chi Zhang, Maged Elhefnawey, Li Li   +6 more
doaj   +1 more source

Transformation Mechanism of Fluormica to Fluoramphibole in Fluoramphibole Glass Ceramics

Advances in Materials Science and Engineering, 2016
During isothermal sintering at 820°C, the transformation mechanism of fluormica to fluoramphibole in powder compacts of fluormica and soda-lime glass was investigated using differential thermal analysis, infrared reflection spectrometry, X-ray ...
Wei Si, Hua-Shen Xu, Ming Sun, Chao Ding, Wei-Yi Zhang   +4 more
doaj   +1 more source

Effect of prior martensite on bainitic transformation of high Si hypereutectoid steel

Journal of Materials Research and Technology
The paper discusses the effect of prior martensite on the bainitic transformation of a high Si hypereutectoid steel. The research uses a combination of experimental techniques, high-resolution dilatometry and X-ray diffraction analysis, and theoretical ...
Carlos Garcia-Mateo, Thomas Sourmail, Amandine Philippot, Lucia Morales-Rivas, Jose A. Jimenez   +4 more
doaj   +1 more source

Effect of isothermal transformation temperature on the microstructure, precipitation behavior, and mechanical properties of anti-seismic rebar

High Temperature Materials and Processes
The synergy between Nb/Ti strengthening and precise isothermal transformation temperatures has resulted in the optimal microstructure and mechanical properties in Nb/Ti anti-seismic rebars.
Zhang Junxiang, Gu Shangjun, Wang Jie, Wei Fulong, Li Zhiying, Zeng Zeyun, Shen Bin, Li Changrong   +7 more
doaj   +1 more source

TiFe Precipitation Behavior and its Effect on Strengthening in Solution Heat-Treated Ti-5Al-3.5Fe During Isothermal Aging

Metals, 2018
We investigated the TiFe precipitation behavior of solution heat-treated Ti-5Al-3.5Fe during isothermal aging, quantified the effect of precipitation on strengthening by evaluating the hardness, and compared it to the effect of Ti3Al precipitation in Ti ...
Hye-Jeong Choe, Jong Woo Won, Yong-Taek Hyun, Ka Ram Lim, Seog-Young Yoon   +4 more
doaj   +1 more source