Micro-nano structure and characterization in the nugget zone of Al-Cu-Mg alloy under friction stir processing

mproving ductility in metals using friction stir processing (FSP) is a challenging effort and is made by means of a rotating tool inserted in a work piece providing heat transfer and plastic deformation. In this investigation, improving ductility during FSP was determined as a purpose and the microstructure and mechanical properties of nugget zone were investigated during friction stir processing (FSP) of pure copper. Ductility was measured using tensile elongations at a temperature of 20 °C. By varying the traverse speed from 40 to 100 mm/min at rotation speeds of 300 and 600 rpm, the ultrafine grain microstructure was achieved .Defects were observed in rotational speed of 300 rpm. By increasing traverse speed at constant rotational speed of 600 rpm grain size of the nugget zone decreased and ductility increased. Achievable ductility was limited by cavity formation due to lower heat input and deformation in samples with defects.

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Machining characteristics of fine grained AZ91 Mg alloy processed by friction stir processing

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(17)60092-x ◽

2017 ◽

Vol 27 (4) ◽

pp. 804-811 ◽

Cited By ~ 20

Author(s):

G.V.V. SURYA KIRAN ◽

K. HARI KRISHNA ◽

Sk. SAMEER ◽

M. BHARGAVI ◽

B. SANTOSH KUMAR ◽

...

Keyword(s):

Friction Stir Processing ◽

Mg Alloy ◽

Friction Stir ◽

Fine Grained ◽

Machining Characteristics

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Role of Friction Stir Processing Parameters on the Microstructure and Hardness of ZE41 Mg Alloy: A Taguchi Approach

Materials Performance and Characterization ◽

10.1520/mpc20180145 ◽

2019 ◽

Vol 8 (1) ◽

pp. 20180145

Author(s):

M. Venkataiah ◽

T. Anup Kumar ◽

K. Venkata Rao ◽

S. Anand Kumar ◽

B. Ratna Sunil

Keyword(s):

Friction Stir Processing ◽

Processing Parameters ◽

Mg Alloy ◽

Taguchi Approach ◽

Friction Stir

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Corrosion Behavior of a Mg Alloy AE42 Subjected to Friction Stir Processing

CORROSION ◽

10.5006/0750 ◽

2013 ◽

Vol 69 (2) ◽

pp. 122-135 ◽

Cited By ~ 10

Author(s):

H.S. Arora ◽

H. Singh ◽

B.K. Dhindaw

Keyword(s):

Corrosion Behavior ◽

Friction Stir Processing ◽

Mg Alloy ◽

Friction Stir

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Wear and Mechanical Properties of Aluminum Alloy Based Hybrid Composites [(SiC+Gr) and (SiC+Al2O3)] Fabricated by Friction Stir Processing

Volume 2A: Advanced Manufacturing ◽

10.1115/imece2013-64734 ◽

2013 ◽

Author(s):

A. Kumar ◽

A. Devaraju ◽

B. Kotiveerachari

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Friction Stir Processing ◽

Rotational Speed ◽

Solid Lubricant ◽

Hybrid Composites ◽

Optical Microscope ◽

High Wear Resistance ◽

Nugget Zone ◽

Friction Stir

In this investigation, the influence of tool rotational speed on wear and mechanical properties of Aluminum alloy based surface hybrid composites fabricated via Friction stir processing (FSP) was studied. The fabricated surface hybrid composites have been examined by optical microscope for dispersion of reinforcement particles. Microstructures of all the surface hybrid composites revealed that the reinforcement particles (SiC, Gr and Al2O3) are uniformly dispersed in the nugget zone. It is observed that the microhardness is decreased with increasing the rotational speed and exhibited higher microhardness value in Al-SiC/Al2O3 surface hybrid composite at a rotational speed of 900 rpm, due to presence and pining effect of hard SiC and Al2O3 particles. It is also observed that high wear resistance exhibited in the Al-SiC/Gr surface hybrid composites at a rotational speed of 900 rpm due to presence of SiC and Gr acted as load bearing elements and solid lubricant respectively. The observed wear and mechanical properties have been correlated with microstructures and worn morphology.

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Mg/ZrO2 Metal Matrix Nanocomposites Fabricated by Friction Stir Processing: Microstructure, Mechanical Properties, and Corrosion Behavior

Frontiers in Bioengineering and Biotechnology ◽

10.3389/fbioe.2021.605171 ◽

2021 ◽

Vol 9 ◽

Author(s):

Ke Qiao ◽

Ting Zhang ◽

Kuaishe Wang ◽

Shengnan Yuan ◽

Shengyi Zhang ◽

...

Keyword(s):

Mechanical Properties ◽

Electron Microscope ◽

Grain Refinement ◽

Friction Stir Processing ◽

Biological Properties ◽

Mg Alloy ◽

Corrosion Properties ◽

Metal Matrix Nanocomposites ◽

Friction Stir ◽

Average Grain Size

Magnesium (Mg) and its alloys have attached more and more attention because of their potential as a new type of biodegradable metal materials. In this work, AZ31/ZrO2 nanocomposites with good uniformity were prepared successfully by friction stir processing (FSP). The scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to characterize the microstructure of the composites. The mechanical properties, electrochemical corrosion properties and biological properties were evaluated. In addition, the effect of reinforced particles (ZrO2) on the microstructure and properties of the composite was studied comparing with FSP AZ31 Mg alloy. The results show that compared with the base metal (BM), the AZ31/ZrO2 composite material achieves homogenization, densification, and grain refinement after FSP. The combination of dynamic recrystallization and ZrO2 particles leads to grain refinement of Mg alloy, and the average grain size of AZ31/ZrO2 composites is 3.2 μm. After FSP, the c-axis of grain is deflected under the compression stress of shoulder and the shear stress of pin. The ultimate tensile strength (UTS) and yield strength (YS) of BM were 283 and 137 MPa, respectively, the UTS and YS of AZ31/ZrO2 composites were 427 and 217 MPa, respectively. The grain refinement and Orowan strengthening are the major strengthening mechanisms. Moreover, the corrosion resistance in simulated body fluid of Mg alloy is improved by grain refinement and the barrier effect of ZrO2.

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