Results 31 to 40 of about 5,251 (214)

Effects of quenching agents, two-step aging and microalloying on tensile properties and stress corrosion cracking of Al-Zn-Mg-Cu alloys

Journal of Materials Research and Technology, 2020
In this paper, the tensile properties and stress corrosion resistance of two Al-Zn-Mg-Cu alloys were tested by tensile test and slow stress rate tensile test. The microstructures of the precipitation were observed by transmission electron microscopy, and
Quanfeng Xiao, Yuanming Xu, Jiwu Huang, Bo Li, Baofeng Wang, Shichao Liu, Le Fu   +6 more
doaj   +1 more source

Tailoring grain sizes of the biodegradable iron-based alloys by pre-additive manufacturing microalloying

Scientific Reports, 2021
We demonstrated the design of pre-additive manufacturing microalloying elements in tuning the microstructure of iron (Fe)-based alloys for their tunable mechanical properties.
Chih-Chieh Huang, Tu-Ngoc Lam, Lia Amalia, Kuan-Hung Chen, Kuo-Yi Yang, M. Rifai Muslih, Sudhanshu Shekhar Singh, Pei-I. Tsai, Yuan-Tzu Lee, Jayant Jain, Soo Yeol Lee, Hong-Jen Lai, Wei-Chin Huang, San-Yuan Chen, E-Wen Huang   +14 more
doaj   +1 more source

Relationship between solidification microstructure and hot cracking susceptibility for continuous casting of low-carbon and high-strength low-alloyed steels: A phase-field study [PDF]

, 2013
© The Minerals, Metals & Materials Society and ASM International 2013Hot cracking is one of the major defects in continuous casting of steels, frequently limiting the productivity.
A. Choudhury, A. Karma, A. Karma, A. Wheeler, A.L. Greer, B. Böttger, B. Böttger, B. Böttger, B. Böttger, B. Böttger, B. Böttger, B. Böttger, B. Böttger, B. Nestler, B. Santillana, B. Santillana, Ch.-A. Gandin, D. G. Eskin, D. Raabe, D. Senk, F. Ma, H. Yang, I. Maxwell, I. Steinbach, I. Steinbach, I. Steinbach, J. Eiken, J. Eiken, J. Tiaden, K. Nakajima, M. Apel, M. Rappaz, N Saunders, N. Warnken, R. Almgren, R. Kobayashi, R. Lagneborg, S.G. Kim, S.G. Kim, T.E. Quested, T.W. Clyne   +40 more
core   +1 more source

Grain Size Evolution and Mechanical Properties of Nb, V–Nb, and Ti–Nb Boron Type S1100QL Steels

Metals, 2021
Titanium additions are often used for boron factor and primary austenite grain size control in boron high- and ultra-high-strength alloys. Due to the risk of formation of coarse TiN during solidification the addition of titanium is limited in respect to ...
Jan Foder, Jaka Burja, Grega Klančnik
doaj   +1 more source

Microstructure characterization of porous microalloyed aluminium-silicate ceramics [PDF]

, 2011
Kaolinite and bentonite clay powders mixed with active additives, based on Mg(NO3)2 and Al(NO3)2, sintered at high temperatures produce very porous ceramics with microcrystalline and amorphous regions and highly developed metalized surfaces (mainly ...
Mitić V.V., Paunović V., Purenović Jelena, Purenović M.   +3 more
core   +1 more source

Effect of Vanadium and Rare Earth on the Structure, Phase Transformation Kinetics and Mechanical Properties of Carbide-Free Bainitic Steel Containing Silicon

Applied Sciences, 2022
Carbide-free bainitic (CFB) steels with a matrix of bainitic ferrite and thin layers of retained austenite, to reduce the manufacturing costs, usually do not contain alloying elements.
Behdad Garmeh, Masoud Kasiri-Asgarani, Kamran Amini, Hamid Ghayour, Hamid Reza Bakhsheshi-Rad, Filippo Berto   +5 more
doaj   +1 more source

Zr and Hf microalloying in an Al-Y-Fe amorphous alloy. Relation between local structure and glass-forming ability [PDF]

, 2008
International audienceThe effects of the addition of small amounts of Zr and Hf (0.5 - 3 %) on the atomic structure of Al88Y7Fe5 metallic glass were examined from extended x-ray absorption fine structure (EXAFS) experiments to better understand the ...
Hazemann, Jean-Louis, Kelton, Kenneth Franklin, Proux, Olivier, Sabra, Maher, Sadoc, Anne, Spence, Karyn   +5 more
core   +3 more sources

Composition optimization design of boron-microalloying ultra-heavy plate steel high hardenability

工程科学学报, 2015
Ultra-heavy plate steel for marine engineering usually requires good hardenability, and rational design of chemical composition of this steel is one of the main methods for improving its hardenability.
GAO Zhi-yu, PAN Tao, WANG Zhuo, LIU Guo-quan, SU Hang   +4 more
doaj   +1 more source

Geometric model for the critical-value problem of nucleation phenomena containing the size effect of nucleating agent [PDF]

, 2005
Nucleation is of great concern in many cases—for example, the production of artificial rainfall and the synthesis of advanced amorphous alloys. Although exact solutions have been well known to both homogeneous nucleation and heterogeneous nucleation ...
Johnson, W. L., Xu, Donghua
core   +1 more source

Effects of Cr and Mo on Mechanical Properties of Hot-Forged Medium Carbon TRIP-Aided Bainitic Ferrite Steels

Metals, 2019
In this study, the effects of Cr and Mo additions on mechanical properties of hot-forged medium carbon TRIP-aided bainitic ferrite (TBF) steel were investigated.
Koh-ichi Sugimoto, Sho-hei Sato, Junya Kobayashi, Ashok Kumar Srivastava   +3 more
doaj   +1 more source