Results 81 to 90 of about 5,978 (267)

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

Advanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu, Wei Jiang, Qingzhong Mao, Xiang Chen, Yonghao Zhao   +4 more
wiley   +1 more source

Multi‐Axis Stretchable Zippers for Personalized Wound Healing

Advanced Science, EarlyView.
Multi‐axis stretchable zippers can adapt to complex wound morphologies and enable personalized wound treatment through programmable contraction. This morphological matching strategy helps accelerate wound closure, improve blood perfusion, promote epithelial regeneration, and enhance collagen remodeling, pioneering new directions for personalized and ...
Siyuan Cai, Guang Yao, Zijian Chen, Shiqi Zhou, Peisi Li, Liheng Lin, Huake Yang, Ziyi Zhou, Linbo Jin, Xingyi Gan, Chenzheng Zhou, Zhen Cai, Taisong Pan, Min Gao, Dongli Fan, Yuan Lin, Yiming Zhang   +16 more
wiley   +1 more source

Selective dissolution of retained austenite in nanostructured bainitic steels [PDF]

, 2014
Nanostructured bainitic steels, containing bainitic ferrite laths and retained austenite films, formed at two different isothermal temperatures were compared for corrosion behavior in chloride-containing solution using electrochemical techniques.
Oluwole Kazum, Mathan Bobby Kannan, Ilana Timokhina, Shahin Khoddam, Kannan, Mathan Bobby, Khoddam, Shahin, Kazum, Oluwole, Timokhina, Ilana, Hossein Beladi, Hodgson, Peter, Beladi, Hossein, Peter Hodgson   +11 more
core   +1 more source

A Comparative Study on the Dynamic Tensile Behavior of Nanostructured Bainitic and Quenched-Tempered Martensitic Steels

Metals, 2018
In order to assess the dynamic tensile behavior of a newly developed three-step low-temperature-transformed bainitic microstructure, and a conventional one-step isothermal bainitic microstructure, and a quenched and tempered martensitic microstructure, a
Wen Zhou, Kaiming Wu, Lei Zhong, Cong Zhang, Tingpin Hou, Raja Devesh Kumar Misra   +5 more
doaj   +1 more source

INFLUENCE OF COOLING RATE ON THE OCORRENCE OF RETAINED AUSTENITE IN A STEEL FOR WELDING ELECTRODES [PDF]

Tecnologia em Metalurgia, Materiais e Mineração, 2015
The effect of cooling rate on the occurrence of retained austenite in a low carbon Si-Mn steel, used for welding electrodes, is measured here by combining the sectioning of Jominy test samples with the measurement of retained austenite by X-ray ...
Helder Carvalho Ferreira, Francisco José Martins Boratto, Vicente Lopes Tadeu Buono   +2 more
doaj   +1 more source

On the orientation relationships between retained austenite and “lath” martensite [PDF]

Metallurgical Transactions A, 1979
Some observations made on the orientation relationships of the austenite ..-->.. lath martensite transformation are reported.
openaire   +3 more sources

Structurally Complex Precipitates Enhance Strength‐Ductility Synergy in a Duplex Medium Entropy Alloy

Advanced Science, EarlyView.
Strong‐yet‐ductile precipitation‐hardening alloys require novel microstructural complexity of precipitates in particularly at cryogenic condition, to constantly impart strain hardening of hard‐and‐brittle precipitates. The present work creates innovative structurally complex precipitates assembled with dispersed nanocores and a chemical‐heterogeneity ...
Shaohua Gao, Yang Yang, Xiaoxuan Fan, Jinyu Zhang, Shuaiyang Liu, Jiao Li, Hui Wang, Wenli Song, Gang Liu, Jun Sun   +9 more
wiley   +1 more source

Hierarchical Twin Networks Enable Exceptional Strength and Fracture Toughness in Titanium

Advanced Science, EarlyView.
A commercial‐purity titanium with hierarchical ultrafine twin structures delivers an exceptional combination of fracture toughness (KJIc) of 187 MPa·m1/2 and specific yield strength of 140 MPa·cm3·g−1, in which pre‐engineered high‐density twin boundaries stimulate massive and dislocations to blunt crack tip.
Xiao‐Wei Zou, Ting Zhu, En Ma, Wei‐Zhong Han   +3 more
wiley   +1 more source

The Mossbauer spectroscopy studies of retained austenite [PDF]

, 2007
Purpose: of this paper: This paper completes the knowledge concerning the mechanisms of destabilization and properties of retained austenite.
Krawczyk, J., Frąckowiak, Janusz, Bała, P.   +2 more
core  

Effect of Precursor Microstructure on Retained Austenite and Mechanical Property of Low Carbon Steels with IQ&P Treatments

Cailiao gongcheng, 2017
The microstructure, retained austenite and mechanical property of low-carbon steels with different precursor microstructures were studied by means of intercritical reheating-quenching and partitioning (IQ&P) processes. The results show that the structure
CHEN Lian-sheng, HU Bao-jia, SONG Jin-ying, ZHANG Jian-yang, ZHENG Xiao-ping, WEI Ying-li, TIAN Ya-qiang   +6 more
doaj   +1 more source