Results 261 to 270 of about 1,628,826 (288)

Improvement of the stability of superelasticity and elastocaloric effect of a Ni-rich Ti-Ni alloy by precipitation and grain refinement

Scripta Materialia, 2019
In this paper, we report that the superelasticity and the elastocaloric effect of Ti-50.8Ni (at.%) alloy are drastically improved by a combination of precipitation and grain refinement strengthening. The process is as follows: first, aging at 773 K after
Hong Chen, F. Xiao, Xiao Liang, Zhenxing Li, Z. Li, Xuejun Jin, N. Min, T. Fukuda   +7 more
semanticscholar   +1 more source

Microstructures and grain refinement performance of Al–Ti–B–C grain refiner via powder metallurgy

Rare Metals, 2015
Abstract The Al‐5Ti‐0.5B‐0.5C grain refiner was prepared by powder metallurgy (PM). Microstructures of the grain refiner and its grain refinement performance in commercially pure aluminum (Al) were investigated by X‐ray diffraction (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry ...
Cong Xu, Wen‐Long Xiao, Shi‐Zhen Wen, Yue‐Jun Zhen, Chao‐Li Ma   +4 more
openaire   +1 more source

Effect of grain refinement on the hydrogen embrittlement of 304 austenitic stainless steel

Journal of Materials Science & Technology, 2019
The effect of grain size (in the range from 4 μm to 12 μm) on the hydrogen embrittlement (HE) of 304 austenitic stainless steel (ASS) was studied. HE susceptibility result shows that HE resistance increases with grain refinement.
Yukun Fan, B. Zhang, J. Wang, E. Han, W. Ke   +4 more
semanticscholar   +1 more source

Effect of La on Microstructure and Grain-Refining Performance of Al-Ti-C Grain Refiner

Journal of Rare Earths, 2006
Abstract Al-Ti-C grain refiner was prepared by SHS (self-propagating high-temperature synthesis)-melting technique. The effect of La on the microstructures of grain refiner was studied by OM, TEM, SEM, XRD, and EDS. The experimental results indicate that La can improve the wettability between liquid aluminum and graphite; the addition of La results ...
Chunxiang Xu, Liping Liang, Binfeng Lu, Jinshan Zhang, Wei Liang   +4 more
openaire   +1 more source

Effect of grain refinement and crystallographic texture produced by friction stir processing on the biodegradation behavior of a Mg-Nd-Zn alloy

Journal of Materials Science & Technology, 2019
The application of a single pass of friction stir processing (FSP) to Mg-Nd-Zn alloy resulted in grain refinement, texture evolution and redistribution of second phases, which improved corrosion resistance.
Wen Zhang, L. Tan, D. Ni, Junxiu Chen, Ying Zhao, Long Liu, C. Shuai, Ke Yang, A. Atrens, Mingchun Zhao   +9 more
semanticscholar   +1 more source

Microstructure and formation mechanism of grain-refining particles in Al-Ti-C-RE grain refiners

Journal of Rare Earths, 2015
Abstract The Al-5Ti-0.2C-based grain refiners with different contents of rare earth (RE) were successfully prepared via powder metallurgy and vacuum casting. The microstructural evolution has been studied by X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
Cong XU, Wenlong XIAO, Weitao ZHAO, Wenhong WANG, Hanada Shuji, Yamagata Hiroshi, Chaoli MA   +6 more
openaire   +1 more source

Grain refinement of self-hardening aluminum alloys

2016
Grain refinement offers several benefits in aluminum casting applications. It can be performed by inoculation, representing one of the mostly used method at industrial level and is based on the addition of nucleating agents. By using grain refinement method important benefits can be reached, for both cast and wrought aluminum alloys: a fine ...
ROSSO, MARIO, PETER, ILDIKO, CASTELLA, CHRISTIAN, LOMBARDO, SILVIA   +3 more
openaire   +2 more sources

Grain Refinement and Grain Size Control in Superplastic Forming

JOM, 1982
Fine grain size is a microstructural requirement for superplastic alloys. We now have a general understanding of the methods of grain refinement and of restriction of grain coarsening. Phase transformation, recrystallation, deformation of duplex microstructures, and phase separation in duplex alloys can produce grain refinement, while particle ...
openaire   +1 more source

Principles of equal-channel angular pressing as a processing tool for grain refinement

, 2006
R. Valiev, T. Langdon
semanticscholar   +1 more source

Demonstrating the roles of solute and nucleant in grain refinement of additively manufactured aluminium alloys

Additive Manufacturing, 2021
Qiyang Tan, Yu Yin, A. Prasad, Gan Li, Qiang Zhu, D. StJohn, Mingxing Zhang   +6 more
semanticscholar   +1 more source