Nanoprecipitates induced dislocation pinning and multiplication strategy for designing high strength, plasticity and conductivity Cu alloys

2021 ◽  
Vol 195 ◽  
pp. 113741
Author(s):  
Huiya Yang ◽  
Keqiang Li ◽  
Yeqiang Bu ◽  
Jinming Wu ◽  
Youtong Fang ◽  
...  
Keyword(s):  
High Strength ◽  
Cu Alloys ◽  
Dislocation Pinning ◽  
Induced Dislocation

Mechanical Properties of Nanocrystalline Materials Produced by In Situ Consolidation Ball Milling

2008 ◽  
Vol 579 ◽  
pp. 15-28 ◽  
Author(s):  
Carl C. Koch ◽  
Khaled M. Youssef ◽  
Ron O. Scattergood
Keyword(s):  
Mechanical Properties ◽  
Ball Milling ◽  
Nanocrystalline Materials ◽  
Preparation Method ◽  
High Strength ◽  
Al Alloys ◽  
Ductile Metals ◽  
Cu Alloys ◽  
Bulk Nanocrystalline

This paper reviews a method, “in situ consolidation ball milling” that provides artifactfree bulk nanocrystalline samples for several ductile metals such as Zn, Al and Al alloys, and Cu and Cu alloys. The preparation method is described in this paper and examples of the mechanical behavior of nanocrystalline materials made by this technique are given. It is found that in such artifact-free metals, combinations of both high strength and good ductility are possible.

Effect of Alloying Elements on the Strength and Casting Characteristics of High Strength Al-Zn-Mg-Cu Alloys

2005 ◽  
pp. 2539-2542
Author(s):  
Ki Tae Kim ◽  
Jeong Min Kim ◽  
Ki Dug Sung ◽  
Joong Hwan Jun ◽  
Woon Jae Jung
Keyword(s):  
High Strength ◽  
Alloying Elements ◽  
Cu Alloys ◽  
Effect Of Alloying

Key Microstructural Features Responsible for Improved Stress Corrosion Cracking Resistance and Weldability in 7xxx Series Al Alloys Containing Micro / Trace Alloying Additions

2006 ◽  
Vol 519-521 ◽  
pp. 315-320 ◽  
Author(s):  
A.K. Mukhopadhyay ◽  
K. Satya Prasad ◽  
Vikas Kumar ◽  
G. Madhusudhan Reddy ◽  
S.V. Kamat ◽  
...  
Keyword(s):  
Quantitative Data ◽  
Microstructural Analysis ◽  
High Strength ◽  
Al Alloys ◽  
The Other ◽  
Alloying Additions ◽  
Cu Alloys ◽  
Medium Strength ◽  
Retrogression And Reaging ◽  
Peak Aged

The commercial 7xxx series Al alloys are based on medium strength Al-Zn-Mg and high strength Al-Zn-Mg-Cu systems. The medium strength alloys are weldable, whilst the high strength alloys are nonweldable. On the other hand, the Cu-free, weldable alloys suffer from poor SCC resistance. It is the purpose of this article to provide quantitative data and microstructural analysis to demonstrate that small additions of either Ag or Sc to Al-Zn-Mg and Al-Zn-Mg-Cu alloys bring about very significant improvement in SCC resistance and weldability, respectively. The improvement in SCC resistance of the Cu-bearing alloys due to over aging and retrogression and reaging (RRA) is further discussed in light of a similar improvement in the SCC resistance of these alloys, when peak aged, due to Ag and Sc additions.

Investigation of quench sensitivity of high strength Al–Zn–Mg–Cu alloys by time–temperature-properties diagrams

2010 ◽  
Vol 31 (6) ◽  
pp. 3116-3120 ◽  
Author(s):  
Shengdan Liu ◽  
Qimin Zhong ◽  
Yong Zhang ◽  
Wenjun Liu ◽  
Xinming Zhang ◽  
...  
Keyword(s):  
High Strength ◽  
Quench Sensitivity ◽  
Cu Alloys

Mesoscopic Structure of Super-High Strength P/M Al-Zn-Mg-Cu Alloys

1996 ◽  
Vol 217-222 ◽  
pp. 1829-1834 ◽  
Author(s):  
Kozo Osamura ◽  
Kazuhide Kohno ◽  
Hiroshi Okuda ◽  
Shouichi Ochiai ◽  
Jun Kusui ◽  
...  
Keyword(s):  
High Strength ◽  
Cu Alloys ◽  
Mesoscopic Structure

Transgranular corrosion fatigue crack growth in age-hardened Al-Zn-Mg (-Cu) alloys

2015 ◽  
Vol 33 (6) ◽  
pp. 301-314 ◽  
Author(s):  
Stan P. Lynch ◽  
Mark Knop ◽  
Rohan T. Byrnes
Keyword(s):  
Crack Growth ◽  
Corrosion Fatigue ◽  
Adsorbed Hydrogen ◽  
Cycle Frequency ◽  
Corrosion Fatigue Crack ◽  
Cu Alloys ◽  
Crack Tips ◽  
Corrosion Fatigue Crack Growth ◽  
Crack Growth Rates ◽  
Induced Dislocation

AbstractThe mechanisms of transgranular corrosion fatigue in age-hardened Al-Zn-Mg (-Cu) alloys are reviewed, with an emphasis on accounting for fractographic observations. The effects of cycle frequency, solution composition, temperature, and electrode potential on crack-growth rates (and striation spacing and appearance) at intermediate to high ΔK are discussed in particular. It is concluded that corrosion fatigue, resulting in cleavage-like {100} <110> cracking with extensive slip on {111} planes intersecting crack fronts, can best be explained by an adsorption-induced dislocation emission mechanism (involving weakening of interatomic bonds at crack tips by adsorbed hydrogen). Solute hydrogen ahead of cracks appears to play little, if any, role in facilitating cleavage-like cracking, and the mechanisms based on decohesion are at odds with the locally high strains around cracks and the formation of nanovoids ahead of cracks.

High-Strength Electroplated Au–Cu Alloys as Micro-Components in MEMS Devices

2017 ◽  
Vol 164 (4) ◽  
pp. D244-D247 ◽  
Author(s):  
Haochun Tang ◽  
Chun-Yi Chen ◽  
Masaharu Yoshiba ◽  
Takashi Nagoshi ◽  
Tso-Fu Mark Chang ◽  
...  
Keyword(s):  
High Strength ◽  
Mems Devices ◽  
Cu Alloys
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