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Article
Glass transition and crystallization of Ce68Al10Cu20Co2 bulk metallic glass studied by Flash DSC
In this study, glass transition and crystallization of Ce68Al10Cu20Co2 bulk metallic glass at heating rates ranging from 0.083 to 14,000 K/s, covering six orders of magnitude, are investigated. For the glass tran...
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Article
Residual Stress Induced by Phase Transformation and its Role in the Delayed Cracking Performance of 22MnB5 Hot Roll Bending Pipes
Residual stress plays an important role in the delayed cracking performance of the 22MnB5 hot roll bending pipe. In the present study, the residual stress distribution of the 22MnB5 hot roll bending pipes with...
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Chapter and Conference Paper
Nucleation of One Single Sn Droplet on Al Thin Film Explored by Nanocalorimetry
In order to investigate the process of micro-nano scale droplet in non-equilibrium state, it is necessary to obtain the thermodynamic parameters of rapid phase transition during the solidification process. I...
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Chapter and Conference Paper
Preparation of Cu Powders with Electrical Explosion of Wires and Their Size-Dependent Mechanical Properties
In this paper, spherical and regular without satellite spheres were prepared by the method. Based on the Newton cooling law, the dependence of the on powder size was obtained, showing that the reduced ...
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Article
Exceptional Cross-Tension Property in Resistance Spot Welded 7Mn Steels by Combining Cyclic Heat Treatment and Intercritical Annealing
Among the 3rd generation advanced high strength steels, medium Mn steels receive extensive attention sed in modern automotive industry attributing to their encouraging mechanical performance and lower producti...
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Chapter and Conference Paper
Cooling Rate and Roughness Dependence of the Undercooling for One Single Sn Droplet with Si Thin Film Substrate by Nanocalorimetry
has been developed and used to study the nucleation behavior of one single metallic droplet, especially the . For heterogeneous and are deemed as significant factors to affect the . In this paper, the r...
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Article
Enhanced Cross-Tension Property of the Resistance Spot Welded Medium-Mn Steel by In Situ Microstructure Tailoring
Medium Mn steels, one of the most promising 3rd generation advanced high strength steels (AHSS), achieve an encouraging trade-off between the outstanding mechanical property and the production cost. As a typic...
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Article
A SnBiAgIn solder alloy with exceptional mechanical properties by rapid quenching
As a widely adopted candidate in the modern electric industry, much attention has been paid to SnBi solder alloy. However, the intrinsic brittleness of this alloy hinders its further application. To tackle thi...
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Article
Role of Intercritical Annealing in Enhancing the Cross-Tension Property of Resistance Spot-Welded Medium Mn Steel
Among the third-generation advanced high-strength steels, medium Mn steels are one of the most promising candidates in the modern automotive industry. However, their application is challenged by the weldabilit...
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Chapter and Conference Paper
Insights into the Formation of Al–Cu Intermetallic Compounds During the Solid–Liquid Reaction by High-Resolution Transmission Electron Microscopy
During Al/Cu solid– , different (IMCs) are expected, which can affect the mechanical and electrical properties of Al/Cu joints. To tackle this challenge, it is then necessary to tune the interface structure,...
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Chapter and Conference Paper
Mechanism Behind Al/Cu Interface Reaction: The Kinetics and Diffusion of Cu in Forming Different Intermetallic Compounds
The dissimilar welding of Al/Cu is widely used in power industry systems because it realizes satisfying mechanical and electrical properties with low cost. As the key factor influencing the property of welds, ...
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Article
Influence of dealloying solution on the microstructure of nanoporous copper through chemical dealloying of Al75Cu25 ribbons
In this article, Al75Cu25 (at.%) ribbons were dealloyed by HCl, H2C2O4, H3PO4, and NaOH solutions, respectively, to prepare nanoporous copper (NPC). The dealloying behavior is varied with dealloying solutions, al...
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Article
Role of the V-Notch Location in the Impact Toughness of 9 Pct Cr-CrMoV Dissimilar Welded Joints
The location of the V-notch in a weld metal (WM) can have a significant influence on the impact toughness of a 9 weight percent (9 pct) Cr-CrMoV dissimilar welded joint. The specimens with the V-notch at posit...
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Chapter and Conference Paper
Microstructure Evolution of the 410 Stainless Steel and Co-Based Alloy Dissimilar Welded Joint Manufactured by Electron Beam Welding
The and in each characteristic zone of the 410 / were analyzed in the present study. The results showed that the across the joint exhibited an inhomogeneous distribution with the lowest of ~160 H...
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Chapter and Conference Paper
Highly Enhanced Cross Tensile Strength of the Resistance Spot Welded Medium Manganese Steel by Optimized Post-heating Pulse
The in the evolution and (CTS) variation of the resistance spot welded 7Mn (MMS) was studied. The results showed that the in the nugget fabricated by 4.0 kA was , yet the one by 4.5 kA was . Acco...
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Chapter and Conference Paper
Fabrication of Bilayer Nanoporous Copper from Rapidly Solidified Al70Cu30 Ribbons by Chemical Dealloying Technique
this (NPC) was prepared by chemical of the Al70Cu30 (at.%) melt-spun . The of Al70Cu30 in 4.2 vol% HCl solution facilitates the bilayer NPC with various . The results show that the formation of pores...
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Chapter and Conference Paper
Stress Induced Fracture Transition in High-Temperature 9% Cr–CrMoV Dissimilar Welded Joint
The 9% Cr–CrMoV dissimilar welded joints were investigated in the present study. The results showed that the occurred in the CrMoV-HAZ under 150 MPa at 839 K with necking, yet transformed to the fu...
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Chapter and Conference Paper
Formation of the Carbon-Enriched Zone and Its Evolution During the Long-Term Aging Process for 9% Cr-CrMoV Dissimilar Welded Joint
appearance of in the 9% Cr-CrMoV was resulted from the sharp content transition of the strong -forming element Cr between the weld (~2.3 wt%) and the base metal (~10.6 wt%). The width of the (CEZ) un...
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Chapter and Conference Paper
Effect of the Cooling Time on the Cross Tensile Strength of the Resistance Spot Welded Medium Manganese Steel
The effect of the between the welding pulses and post-heating pulses on the (CTS) of the resistance spot welded (RSW-MMS) was studied in this paper. Optical microscope (OM) and ) were employed to analyz...
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Article
Failure Transition Mechanism of Stress Rupture Performance of the Inconel 625/9 Pct Cr Steel Dissimilar Welded Joint
Based on a series of stress rupture tests at 620 °C under 110 to 170 MPa and at 650 °C under 80 to 110 MPa, the relationship between the stress and rupture time was obtained to evaluate the long-term performan...
