Local electrochemical properties of laser beam-welded high-strength Al–Zn–Mg–Cu alloys

2008 ◽  
Vol 59 (1) ◽  
pp. 5-13 ◽  
Author(s):  
J. Wloka ◽  
T. Hack ◽  
S. Virtanen
Keyword(s):  
Laser Beam ◽  
Electrochemical Properties ◽  
High Strength ◽  
Cu Alloys

scholarly journals Fabrication and Characterization of High Strength Al-Cu Alloys Processed Using Laser Beam Melting in Metal Powder Bed

2014 ◽  
Vol 56 ◽  
pp. 135-146 ◽  
Author(s):  
Bhrigu Ahuja ◽  
Michael Karg ◽  
Konstantin Yu. Nagulin ◽  
Michael Schmidt
Keyword(s):  
Laser Beam ◽  
Metal Powder ◽  
High Strength ◽  
Powder Bed ◽  
Cu Alloys ◽  
Laser Beam Melting ◽  
Fabrication And Characterization

scholarly journals Development of laser welding of high strength aluminium alloy 2024-T4 with controlled thermal cycle

2020 ◽  
Vol 326 ◽  
pp. 08005
Author(s):  
Mete Demirorer ◽  
Wojciech Suder ◽  
Supriyo Ganguly ◽  
Simon Hogg ◽  
Hassam Naeem
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Heat Input ◽  
Thermal Cycle ◽  
Laser Beam Welding ◽  
Base Material ◽  
High Strength ◽  
Cooling Rates ◽  
Aa 2024 ◽  
Welding Processes

An innovative process design, to avoid thermal degradation during autogenous fusion welding of high strength AA 2024-T4 alloy, based on laser beam welding, is being developed. A series of instrumented laser welds in 2 mm thick AA 2024-T4 alloys were made with different processing conditions resulting in different thermal profiles and cooling rates. The welds were examined under SEM, TEM and LOM, and subjected to micro-hardness examination. This allowed us to understand the influence of cooling rate, peak temperature, and thermal cycle on the growth of precipitates, and related degradation in the weld and heat affected area, evident as softening. Although laser beam welding allows significant reduction of heat input, and higher cooling rates, as compared to other high heat input welding processes, this was found insufficient to completely supress coarsening of precipitate in HAZ. To understand the required range of thermal cycles, additional dilatometry tests were carried out using the same base material to understand the time-temperature relationship of precipitate formation. The results were used to design a novel laser welding process with enhanced cooling, such as with copper backing bar and cryogenic cooling.

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.

scholarly journals Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

2018 ◽  
Vol 18 (3) ◽  
pp. 34-42 ◽  
Author(s):  
L. Tuz
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
High Strength Steel ◽  
High Strength ◽  
Fine Grain ◽  
Steel Material ◽  
Bainitic Structure ◽  
Haz Width ◽  
Quenching And Tempering ◽  
Softened Zone

AbstractThe paper presents results of microstructure and mechanical properties investigation of laser beam welded high-strength steel. Material for test was non-alloyed steel with yield strength of 690 MPa after quenching and tempering in delivery condition. Research carried out on the butt-welded joints shows fine-grain martensitic-bainitic structure of base metal and in the weld. Investigations of mechanical properties revealed the softened zone in HAZ where the hardness decrease without microstructural changes was observed. Moreover, an influence of softened zone and HAZ width on impact strength was observed where the occurrence of lower hardness led to fracture path deviation phenomenon.

Weld Microstructure Characteristics of Dual Laser Beam Multi-Layer Welded High Strength Steel with Filler Wire

2010 ◽  
Vol 37 (5) ◽  
pp. 1361-1367
Author(s):  
尹杰 Yin Jie ◽  
李俐群 Li Liqun ◽  
陶汪 Tao Wang ◽  
张新戈 Zhang Xin′ge
Keyword(s):  
Laser Beam ◽  
High Strength Steel ◽  
High Strength ◽  
Filler Wire ◽  
Microstructure Characteristics ◽  
Weld Microstructure ◽  
Dual Laser

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

Electrochemical Properties of Al-Cu Alloys in Nacl Solutions

2015 ◽  
pp. 727-734 ◽  
Author(s):  
Alejandra Silvina Roman ◽  
Claudia Marcela Méndez ◽  
Carlos Enrique Schvezov ◽  
Alicia Esther Ares
Keyword(s):  
Electrochemical Properties ◽  
Cu Alloys
Sign in / Sign up

Export Citation Format

Share Document