what is the use of mettallography or why metallo graphy is needed?

FIRST & FOREMOST than you very much for providing good discussion about the subject of science and health. The use of METALLOGRAPHY is to identify alloys and predict material properties, as well as processing conditions by metallography alone. The word of "properties" of the material clears the use of metallography. Yes it relates with biomedical field. A function of both GEOGRAPHY and DEMOGRAPHICS, where, biomedical research explores a variety of human health-related focus areas to promote improvement in the quality of life. The word GEOGRAPHY included, obviously it related to the METALLOGRAPHY. As biomedical research encompasses such diverse subjects as; 1. adolescent pregnancy. 2. bioengineering, 3. biohealth preparedness and bioterrorism issues, 4. cancer, 5. cardiovascular research, 6. diabetes prevention, 7. family and community violence, and 8. geosocioeconomic health disparity issues, 9. geriatrics, 10. HIV, 11. neuroscience, 12. nutrition, 13. obesity, 14. physical activity, 15. regenerative medicine, Happy Posting and Earnings - my friend, CEN7777.