**Symbols**

*Magnesium - The Wonder Element for Engineering/Biomedical Applications*

lowing conclusions can be made:

machining Mg-based materials.

ECAP equal channel angular pressing CAGR compound annual growth rate

MMC metal matrix composite NTM nontraditional machining LBM laser beam machining LAM laser-assisted machining

**Acknowledgements**

seen in this work.

**Nomenclature**

FBU flank buildup BUE built-up edge

Based on preliminary studies on linear cutting and drilling operations, the fol-

• Pressure remains dominant in deciding depth of cut in both AZ91 Mg alloy and nanocomposites. Traverse speed decides the quality of cut generated by water jets. The lower the traverse speed, the higher the surface quality, and surface quality deteriorates with increase in traverse speed. The abrasive mass flow rate has the least effect on both penetration and surface quality. Similar observations are obtained in machining different ductile materials with AWJ.

• Drilling of AZ91 Mg alloy also revealed acceptable results when compared to conventional drilling and jig boring. No fire ignition issues aroused during both machining operations. The use of profile projector is found to be the accurate and straightforward way of finding the depth of penetration in linear cutting

• Apart from linear cutting, AWJ can be successfully utilized for other machining operations such as milling and turning of Mg-based materials. Complex shapes and profiles of different types of gears can be easily produced by AWJ

• AWJ machining of Mg-based materials is the less studied area. Primary results presented in the chapter contribute to the optimization of AWJ process in

• Overall it can be concluded that AWJM technology could be ideal for flexible

We would like to thank TEQIP-BMS College of Engineering, Bengaluru, for providing materials, research facilities to conduct experiments, and financial assistance in publishing this chapter. We want to express our sincere gratitude and appreciation to Mr. Venkatesh Ramamurthy, Deputy Manager, Robert Bosch India, Bengaluru; Mr. Vikarm Kumar S Jain, Research Scholar, Dept. of Metallurgical and Materials Engg. National Institute of Technology, Tiruchirappalli, Tamilnadu; and Ms. Madhuri P Rao Research Scholar, Dept. of Chemistry, BMS College of Engineering, Bengaluru, for their invaluable support in completing this project. We also wish to express heartfelt thanks to Gopalakrishna S S for the Photoshop works

and risk-free machining of Mg-based materials and Mg-MMCs.

with lesser time compared to other NTM and conventional methods.

operations and obtaining roundness of AWJ-drilled holes.

**76**

