Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Anudeep Mallarapu MS Thesis.pdf (4.95 MB)

ETD Abstract Container

Abstract Header

Solid State Conversion of Aluminum Alloy Chips to Dense Bulk Material - Modeling and Analysis

Mallarapu, Anudeep
http://rave.ohiolink.edu/etdc/view?acc_num=osu1534500392190322

Abstract Details

2018, Master of Science, Ohio State University, Mechanical Engineering.
Solid state recycling of metals has advantages ranging from energy saving, pollution reduction and material savings to reduction in production time by eliminating the need for higher energy processes like smelting and casting. As the standard of living increases in the developing world, the amount of aluminum that will need to be recycled is going to increase significantly in the next few decades. It has been shown in literature that it is highly cost efficient to recycle non-ferrous alloys like aluminum, magnesium and titanium alloys directly in solid state over conventional melting based techniques. For example, machining produces a lot of scrap chips which can be recycled by compacting them and subjecting to severe plastic deformation processes. If properly designed, ultra-fine grained materials with good mechanical properties can be achieved with minimum number of steps using direct forming of the compacted chips. Nonetheless, there are several challenges in understanding the required thermomechanical processing parameters for proper bonding of chips and grain refinement. Computational challenges include modeling the interaction and welding between the chips. In this study, computational models have been developed to investigate solid state recycling using hot extrusion and friction stir extrusion processes. In continuum models porosity or gaps between the chips can be ignored. Finally to study the interaction between the individual chips during compaction an shear, a multibody finite element model is developed that includes the discrete geometry of chips. Details of the background, computational models, simulations of the processes, results and new insights are included in this thesis.
Rajiv Shivpuri (Advisor)
Prasad Mokashi (Committee Member)
102 p.
Mechanical Engineering
Finite Element Analysis, Aluminum, Manufacturing

Recommended Citations

Citations

  • Mallarapu, A. (2018). Solid State Conversion of Aluminum Alloy Chips to Dense Bulk Material - Modeling and Analysis [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534500392190322

    APA Style (7th edition)

  • Mallarapu, Anudeep. Solid State Conversion of Aluminum Alloy Chips to Dense Bulk Material - Modeling and Analysis . 2018. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1534500392190322.

    MLA Style (8th edition)

  • Mallarapu, Anudeep. "Solid State Conversion of Aluminum Alloy Chips to Dense Bulk Material - Modeling and Analysis ." Master's thesis, Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534500392190322

    Chicago Manual of Style (17th edition)

osu1534500392190322
771
© 2018, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.