Influence of cutting parameters on the ductile-brittle transition of single-crystal calcium fluoride during ultra-precision cutting

2016 ◽  
Vol 89 (1-4) ◽  
pp. 219-225 ◽  
Author(s):  
Xiao Chen ◽  
Jianfeng Xu ◽  
Haisheng Fang ◽  
Ruiji Tian
Keyword(s):  
Single Crystal ◽  
Calcium Fluoride ◽  
Cutting Parameters ◽  
Brittle Transition ◽  
Ultra Precision

Experimental study of crystal anisotropy based on ultra-precision cylindrical turning of single-crystal calcium fluoride

2015 ◽  
Vol 40 ◽  
pp. 172-181 ◽  
Author(s):  
Shunya Azami ◽  
Hiroshi Kudo ◽  
Yuta Mizumoto ◽  
Takasumi Tanabe ◽  
Jiwang Yan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Single Crystal ◽  
Calcium Fluoride ◽  
Crystal Anisotropy ◽  
Ultra Precision

scholarly journals Experimental Analysis of the Surface Integrity of Single-crystal Calcium Fluoride Caused by Ultra-precision Turning

Procedia CIRP ◽  
2014 ◽  
Vol 13 ◽  
pp. 225-229 ◽  
Author(s):  
Shunya Azami ◽  
Kudo Hiroshi ◽  
Takasumi Tanabe ◽  
Jiwang Yan ◽  
Yasuhiro Kakinuma
Keyword(s):  
Single Crystal ◽  
Surface Integrity ◽  
Experimental Analysis ◽  
Calcium Fluoride ◽  
Precision Turning ◽  
Ultra Precision

Ultra-Precision Machining Technology Based on Dynamic Minimum Thickness of Cut for Machined Single Crystal Materials

2011 ◽  
Vol 138-139 ◽  
pp. 1246-1250
Author(s):  
Ji Cai Kuai
Keyword(s):  
Surface Roughness ◽  
Friction Coefficient ◽  
Single Crystal ◽  
Surface Quality ◽  
Cutting Parameters ◽  
Precision Machining ◽  
Minimum Thickness ◽  
Single Crystal Copper ◽  
Ultra Precision ◽  
Relationship Of

The dynamic minimum thickness of cut for the ultra-precision machining surface quality is important influence. Between tool and the workpiece for the friction coefficient were analysised, the relationship of the friction coefficient and the MTC were discussed, and the MTC and its effects on surface roughness were a theoretical analysised and experimental verification with processed single crystal copper and single crystal aluminum by AFM’s diamond tip. The results show: the MTC of single-crystal copper (single crystal aluminum) is 5.2nm (8.2nm) in stable cutting conditions. Further processing single crystal copper (ingle crystal aluminum) with cutting thickness of 5.2nm (8.2nm), and the surface roughness Ra160nm (Ra110nm) is obtained. So the MTC is evolving with the friction coefficient and the force ratio, theoretical MTC tends to be minimal value then before the adhering effect to reach remarkable. Appropriate adjustments cutting parameters, the cutting process can always micro-cutting phase to reach the steady-thin chip, and no plowing phenomenon. So the surface residues highly were reduced and higher surface quality was achieved.

scholarly journals Influence of Nose Radius on Surface Integrity in Ultra-precision Cylindrical Turning of Single-crystal Calcium Fluoride

Procedia CIRP ◽  
2016 ◽  
Vol 45 ◽  
pp. 139-142 ◽  
Author(s):  
Yuta Mizumoto ◽  
Hiroi Kangawa ◽  
Yosuke Nakagawa ◽  
Hiroki Itobe ◽  
Takasumi Tanabe ◽  
...  
Keyword(s):  
Single Crystal ◽  
Surface Integrity ◽  
Calcium Fluoride ◽  
Nose Radius ◽  
Ultra Precision

Nanoindentation Characterization of Single-Crystal Silicon With Oxide Film

2021 ◽  
Author(s):  
Lianmin Yin ◽  
Yifan Dai ◽  
Hao Hu
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Oxide Film ◽  
Single Crystal ◽  
Deformation Zone ◽  
Single Crystal Silicon ◽  
Plastic Deformation Zone ◽  
Crystal Silicon ◽  
Ultra Precision

Abstract In order to obtain ultra-smooth surfaces of single-crystal silicon in ultra-precision machining, an accurate study of the deformation mechanism, mechanical properties, and the effect of oxide film under load is required. The mechanical properties of single-crystal silicon and the phase transition after nanoindentation experiments are investigated by nanoindentation and Raman spectroscopy, respectively. It is found that pop-in events appear in the theoretical elastic domain of single-crystal silicon due to the presence of oxide films, which directly leads the single crystal silicon from the elastic deformation zone into the plastic deformation zone. In addition, the mechanical properties of single-crystal silicon are more accurately measured after it has entered the full plastic deformation.

scholarly journals B07 Ultra Precision cutting with single crystal diamond end mill

2008 ◽  
Vol 2008.7 (0) ◽  
pp. 39-40
Author(s):  
Naoto ISHIDA ◽  
Toshiro SHIBASAKA ◽  
Hirofumi SUZUKI
Keyword(s):  
Single Crystal ◽  
End Mill ◽  
Single Crystal Diamond ◽  
Ultra Precision

Indentation Crack Initiation and Ductile to Brittle Transition Behavior of Fused Silica

2013 ◽  
Vol 797 ◽  
pp. 667-672 ◽  
Author(s):  
Peng Yao ◽  
Wei Wang ◽  
Chuan Zhen Huang ◽  
Jun Wang ◽  
Hong Tao Zhu ◽  
...  
Keyword(s):  
Penetration Depth ◽  
High Efficiency ◽  
Fused Silica ◽  
Load Range ◽  
Brittle Transition ◽  
Ductile Mode ◽  
Indentation Crack ◽  
Ultra Precision ◽  
Ductile To Brittle Transition ◽  
Brittle Mode

To provide a fundamental knowledge for the high efficiency grinding and ultra-precision grinding of fused silica, ductile mode and brittle mode material removal mechanisms were investigated by conducting micro/nanoindentation experiments in the range of 4.9 mN - 1960 mN. Before observing cracks and determining the ductile to brittle transition penetration depth, the samples were etched with hydrofluoric acid to expose cracks. The typical damage morphology of fused silica was discussed by observing the surface and cross-section of indentations, and the depth of SSD was found to be determined by the cone cracks or borderline cracks in the different load range. The ductile to brittle transition penetration depth of fused silica under Vickers indentation was 180 nm.

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