Indentation Crack Initiation and Ductile to Brittle Transition Behavior of Fused silica
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/nano indentation 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.
fused silica indentation crack ductile to brittle transition densification
Peng Yao Wang Wei Chuanzhen Huang Jun Wang Hongtao Zhu Tsunemoto Kuriyagawa
Key Laboratory of High Efficiency and Clean Mechanical Manufacture,Ministry of Education,School of M Key Laboratory of High Efficiency and Clean Mechanical Manufacture,Ministry of Education,School of M Department of Mechanical Systems and Design,Tohoku University,Sendai 980-8579,JAPAN
国际会议
杭州
英文
667-672
2013-09-23（万方平台首次上网日期，不代表论文的发表时间）