**Thermoplastic Forming**

[22] Fu J, Zhu YH, Zheng C, Liu R, Ji Z. Effect of laser shock peening on the compressive deformation and plastic behavior of Zr-based bulk metallic glass. Optics and Lasers in

[23] Qu RT, Zhang QS, Zhang ZF. Achieving macroscopic tensile plasticity of monolithic

[24] Cao YF, Xie X, Antonaglia J, Winiarski B, Wang G, Shin YC, Withers PJ, Dahmen KA, Liaw PK. Laser shock peening on Zr-based bulk metallic glass and its effect on plasticity:

[25] Zhang Y, Wang WH, Greer AL. Making metallic glasses plastic by control of residual

[26] Li N, Chen W, Liu L. Thermoplastic micro-forming of bulk metallic glasses: A review.

[28] Bakkal M, Shih AJ, Scattergood RO. Chip formation, cutting forces, and tool wear in turning of Zr-based bulk metallic glass. International Journal of Machine Tools &

[29] Bakkal M, Liu CT, Watkins TR, Scattergood RO, Shih AJ. Oxidation and crystallization of Zr-based bulk metallic glass due to machining. Intermetallics. 2004;**12**:195-204

[30] Bakkal M, Shih AJ, Scattergood RO, Liu CT. Machining of a Zr-Ti-Al-Cu-Ni metallic

[31] Bakkal M, Shih AJ, McSpadden SB, Liu CT, Scattergood RO. Light emission, chip morphology, and burr formation in drilling the bulk metallic glass. International Journal of

[32] Fujita K, Morishita Y, Nishiyama N, Kimura H, Inoue A. Cutting characteristics of bulk

[33] Huang H, Yan JW. Surface patterning of Zr-based metallic glass by laser irradiation induced selective thermoplastic extrusion in nitrogen gas. Journal of Micromechanics

[34] Huang H, Jun N, Jiang MQ, Ryoko M, Yan JW. Nanosecond pulsed laser irradiation induced hierarchical micro/nanostructures on Zr-based metallic glass substrate.

[35] Huang H, Yan JW.On the surface characteristics of a Zr-based bulk metallic glass processed by microelectrical discharge machining. Applied Surface Science. 2015;**355**:1306-1315 [36] Huang H, Yan JW. Microstructural changes of Zr-based metallic glass during microelectrical discharge machining and grinding by a sintered diamond tool. Journal of Alloys

[37] Huang H, Noguchi J, Yan JW. Shield gas induced cracks during nanosecond-pulsed laser irradiation of Zr-based metallic glass. Applied Physics A: Materials Science and

[27] Schroers J. Processing of bulk metallic glass. Advanced Materials. 2010;**22**:1566-1597

bulk metallic glass by surface treatment. Scripta Materialia. 2013;**68**:845-848

Experiment and modeling. Scientific Reports. 2015;**5**:10789

stress. Nature Materials. 2006;**5**:857-860

glass. Scripta Materialia. 2004;**50**:583-588

and Microengineering. 2017;**27**:075007

Materials and Design. 2016;**109**:153-161

and Compounds. 2016;**688**:14-21

Processing. 2016;**122**:881

Machine Tools & Manufacture. 2005;**45**:741-752

metallic glass. Materials Transactions. 2005;**46**:2856-2863

Engineering. 2016;**86**:53-61

6 Metallic Glasses - Properties and Processing

JOM. 2016;**68**:1246-1261

Manufacture. 2004;**44**:915-925

**Chapter 2**

**Provisional chapter**

**Thermoplastic Forming of Metallic Glasses**

**Thermoplastic Forming of Metallic Glasses**

DOI: 10.5772/intechopen.78016

Metallic glasses (MGs) are an unusual class of materials that possess an amorphous atomic-level structure and display a plethora of desirable mechanical, chemical and physical properties, which makes them one of the most promising engineering materials. However, the poor processability of metallic glasses greatly hindered their engineering applications. Though some techniques have been developed to fabricate metallic glass components, the unique superplasticity of supercooled liquid metallic glasses attracts enduring attentions, which allows thermoplastic forming of metallic glasses on length scales ranging from atomic-size to centimeter and especially offers an alluring prospect in the field of microfabrication. While some pivotal aspects during thermoplastic forming of metallic glasses should be addressed, for example, the evaluation of thermoplastic formability and its relationship with material flowing characteristic, the required thermoplastic forming techniques for processing MG components with high quality and the potential applications of these thermoplastic formed textures are compressively reviewed

**Keywords:** metallic glasses, thermoplastic forming, formability, supercooled liquid

Unlike crystalline metals where dislocations or grain boundaries carry the plastic deformation, metallic glasses (MGs) usually deform inhomogeneous plastic deformation at ambient temperature caused by high localization of shear stress, resulting in fail catastrophe with zero tensile plasticity [1], which severely constraints their structural applications in macro-scale. This challenge tends to be mediated by reducing the sample size or feature below a critical length scale (<1 mm), wherein large tensile-plasticity and enhanced strength could be observed [2, 3],

> © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use,

distribution, and reproduction in any medium, provided the original work is properly cited.

Additional information is available at the end of the chapter

Additional information is available at the end of the chapter

region, vibration loading, superhydrophobic

http://dx.doi.org/10.5772/intechopen.78016

Ning Li and Jiang Ma

Ning Li and Jiang Ma

**Abstract**

in this chapter.

**1. Introduction**

#### **Thermoplastic Forming of Metallic Glasses Thermoplastic Forming of Metallic Glasses**

DOI: 10.5772/intechopen.78016

#### Ning Li and Jiang Ma Ning Li and Jiang Ma

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.78016

**Abstract**

Metallic glasses (MGs) are an unusual class of materials that possess an amorphous atomic-level structure and display a plethora of desirable mechanical, chemical and physical properties, which makes them one of the most promising engineering materials. However, the poor processability of metallic glasses greatly hindered their engineering applications. Though some techniques have been developed to fabricate metallic glass components, the unique superplasticity of supercooled liquid metallic glasses attracts enduring attentions, which allows thermoplastic forming of metallic glasses on length scales ranging from atomic-size to centimeter and especially offers an alluring prospect in the field of microfabrication. While some pivotal aspects during thermoplastic forming of metallic glasses should be addressed, for example, the evaluation of thermoplastic formability and its relationship with material flowing characteristic, the required thermoplastic forming techniques for processing MG components with high quality and the potential applications of these thermoplastic formed textures are compressively reviewed in this chapter.

**Keywords:** metallic glasses, thermoplastic forming, formability, supercooled liquid region, vibration loading, superhydrophobic
