Grain structure and quench-rate effects on strength and toughness of AA7050 Al-Zn-Mg-Cu-Zr alloy plate

1995 ◽  
Vol 26 (9) ◽  
pp. 2481-2484 ◽  
Author(s):  
R. C. Dorward ◽  
DJ. Beerntsen
Keyword(s):  
Grain Structure ◽  
Quench Rate ◽  
Alloy Plate ◽  
Rate Effects ◽  
Zr Alloy ◽  
Strength And Toughness

Quench rate effects in Al-Zn-Mg-Cu alloys

1971 ◽  
Vol 2 (4) ◽  
pp. 1149-1160 ◽  
Author(s):  
D. S. Thompson ◽  
B. S. Subramanya ◽  
S. A. Levy
Keyword(s):  
Quench Rate ◽  
Cu Alloys ◽  
Rate Effects

Processing and Tensile Property of Nano Dispersed Al-Fe-(Mo, V, Zr) Bulk Alloy

2007 ◽  
Vol 26-28 ◽  
pp. 87-90
Author(s):  
Taek Kyun Jung ◽  
Mok Soon Kim ◽  
W.Y. Kim ◽  
Hyouk Chon Kwon ◽  
S. Yi
Keyword(s):  
Melt Spinning ◽  
Hot Extrusion ◽  
Grain Structure ◽  
Bulk Alloy ◽  
Average Grain Size ◽  
Spinning Process ◽  
20 Nm ◽  
Equiaxed Grain ◽  
Very High ◽  
Zr Alloy

The microstructures and mechanical properties of the bulk Al-Fe-(Mo, V, Zr) alloy produced by melt spinning process and subsequent hot extrusion at 693K in the extrusion ratio of 25 to 1 were investigated. TEM observation revealed an equiaxed grain structure with the average grain size of 200 nm for the extruded bulk alloy. Extremely fine dispersoids based on Al-Fe phases, Al-Fe-(Mo, V) phases and Al-Zr phases were observed to be distributed uniformly within grains and at grain boundaries. The size distribution of the binary Al-Fe and the Al-Fe-(Mo, V) phases were ranged from 20 nm to 50 nm, whereas the Al-Zr phase was less than 10 nm. The very high tensile strength of about 800MPa was achieved at room temperature for the extruded bulk alloy.

Investigation on Microstructure and Mechanical Properties of a Mg-Gd-Y-Zr Alloy Plate

2012 ◽  
Vol 27 (6) ◽  
pp. 609-613 ◽  
Author(s):  
Chang Ping Tang ◽  
Liu Yang ◽  
Di Feng ◽  
Yun Lai Deng ◽  
Xin Ming Zhang
Keyword(s):  
Mechanical Properties ◽  
Alloy Plate ◽  
Microstructure And Mechanical Properties ◽  
Zr Alloy

Mictrostructure and Mechanical Property Development in the Heat Affected Zone of Ultrafine Grained HSLA Steel

2010 ◽  
Vol 638-642 ◽  
pp. 3704-3709 ◽  
Author(s):  
Paulo José Modenesi ◽  
Rodrigo Ferreira Fajardo ◽  
Dagoberto Brandão Santos
Keyword(s):  
Grain Size ◽  
Heat Affected Zone ◽  
Heat Input ◽  
Intercritical Annealing ◽  
Warm Rolling ◽  
Carbon Steels ◽  
Grain Structure ◽  
Processing Route ◽  
Low Carbon ◽  
Strength And Toughness

The ferrite grain refinement is a powerful mechanism to improve mechanical properties of low carbon steels providing steels with high strength and toughness at low temperatures and good weldability characteristics. The grain size refining is the only mechanism capable of to increase both mechanical strength and toughness. By refining the grain size of low carbon steel from 5 μm to 1 μm, its yield strength can be theoretically increased from 450 MPa to 650 MPa. In this way refining of ferritic grain is a very attractive processing route. This work aimed to investigate the characteristics of the heat affected zone of a microalloyed low carbon-manganese (0.11% C, 1.41% Mn, 0.028%Nb, and 0.012%Ti) steel with ultra-fine ferrite grain structure produced through quenching, warm rolling, followed by sub and intercritical annealing in laboratory. Four intercritical annealing treatments were performed after the same warm rolling processing to obtain different grain sizes with residual work hardening of the base metals. Specimens were TIG welded with 4 different levels of heat input. Cooling conditions during tests were recorded and used to evaluated the microstructure of the heat affected zones and their hardness. Cooling times between 800 and 500°C from 0.6 to 17 s were obtained. Martensite was observed in the heat affected zones for low-heat-input welding conditions. No softened zone was found in the heat affected zone in any of the performed tests.

scholarly journals The role of quench rate on the plastic flow and fracture of three aluminium alloys with different grain structure and texture

2020 ◽  
Vol 150 ◽  
pp. 103257 ◽  
Author(s):  
Bjørn Håkon Frodal ◽  
Emil Christiansen ◽  
Ole Runar Myhr ◽  
Odd Sture Hopperstad
Keyword(s):  
Plastic Flow ◽  
Aluminium Alloys ◽  
Grain Structure ◽  
Quench Rate

Grain Structure and Precipitates in Squeeze Casting Al-Li-Mg-Zr Alloy

2014 ◽  
Vol 887-888 ◽  
pp. 329-332
Author(s):  
Li Fan ◽  
Zhong Wei Chen ◽  
Qi Tang Hao
Keyword(s):  
Grain Boundaries ◽  
Squeeze Casting ◽  
Grain Structure ◽  
Fine Grained ◽  
Fine Grain ◽  
The Matrix ◽  
Fine Grained Structure ◽  
Heat Treated Condition ◽  
Micrometer Size ◽  
Zr Alloy

Grain structure and precipitates in squeeze casting Al-Li-Mg-Zr alloy for aircraft industry were investigated in heat treated condition, using X-ray diffraction, optical microscopy and transmission electron microscopy. An ultra fine grained structure in sub-micrometer size was obtained, having fine nanograins in it with polycrystalline diffraction rings that are different from the single-crystal patterns in the matrix. Ultra fine grain areas are generally located on the grain boundaries and sub-grain boundaries. In addition, TEM observations indicates the presence of lenticular δ' (Al3Li) phases that symmetrical distributed around the GP zones. The alloy also contains spherical β' (Al3Zr) dispersoids, and S1 (Al2MgLi) phases.

The Effect of Planar Solidification on Mechanical Properties of Al-Zn-Mg-Cu-Zr Alloy Plate

2012 ◽  
pp. 1377-1382 ◽  
Author(s):  
T. Hosch ◽  
M. G. Chu ◽  
G. Feyen ◽  
R. J. Rioja ◽  
W. A. Cassada
Keyword(s):  
Mechanical Properties ◽  
Alloy Plate ◽  
Planar Solidification ◽  
Zr Alloy

Strength-ductility synergy of selective laser melted Al-Mg-Sc-Zr alloy with a heterogeneous grain structure

2020 ◽  
Vol 34 ◽  
pp. 101260
Author(s):  
Zihong Wang ◽  
Xin Lin ◽  
Nan Kang ◽  
Yunlong Hu ◽  
Jing Chen ◽  
...  
Keyword(s):  
Grain Structure ◽  
Zr Alloy

Evolution of grain structure in AA2195 Al-Li alloy plate during recrystallization

2006 ◽  
Vol 16 (2) ◽  
pp. 321-326 ◽  
Author(s):  
Yu-xuan DU ◽  
Xin-ming ZHANG ◽  
Ling-ying YE ◽  
Sheng-dan LIU
Keyword(s):  
Grain Structure ◽  
Alloy Plate
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