Experimental and Applied Mechanics, Volume 6

26.4 Conclusion Indentation-induced phase transformation processes were studied by in situ Raman imaging of the deformed contact region of Si, employing a Raman spectroscopy-enhanced instrumented indentation technique (IIT). The evolution of the stress field and the distribution of the high-pressure phases generated in the transformation processes were qualitatively analyzed as a function of the contact conditions. The reported in situ experiments provide insights to the transformation processes in Si during loading, confirming and providing the experimental evidence of some of the previous assumptions made on this subject. In this context, the developed experimental setup coupling indentation with in situ Raman microscopy has shown its potential in advancing the understanding of the deformation mechanisms. References 1. Mujica A, Rubio A, Munoz A, Needs RJ (2003) High-pressure phases of group-IV, III-V, and II-VI compounds. Rev Mod Phys 75:863–913 2. 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