1. The creation of metallography haa been started with microscopic study of metallic samples, and discoveries 01 microstructure within metallic materials.

2. It was shown that the color metallography is of practical importance to both materials process study and enhancement of optical metallography.

3. Using the method in Quantification Metallography, the size of grain and hardening particles, volume percentage of inclusions and hardening particles are estimated according to samples.

4. The metallography samples fabricated by the vacuum impregnation of resin are introduced.

5. The effects of cooling velocity, the lead content and the gravity on the microstructures of Al Pb alloy were discussed based on the results of optical microscope, SEM and quantitative metallography.

6. Forging defects of mould cavity non-saturate, crack, pucker and shearing edge avulsion, etc. on the astrictive clamps and operating scissors are studied by means of appearance and metallography.

7. A granulation annealing process to change the flake pearlite of malleable iron into granular pearlite was studied with metallography method.

8. The strain of the proeutectoid ferrite in hypoeutectoid steel drawing was measured and analyzed by quantitative metallography.

9. The causes of the wearable zone dropout were analyzed by the metallography analysis and SEM.

10. The iron phosphite eutectic and ledeburite in wearre-sistant cast iron are contradistinguished with metallography and microhardness and scanning electron microscope.

11. With 20 rock bits which used in the field, bearings' surface metallography, rigidity,[Sentencedict.com ] and the main factors influence the life of the rock bit journal bearings were studied.

12. The strain of the proeutectoid ferrite in hypoeutectoid steel drawing measured and analyzed by quantitative metallography.

13. The microcosmic structure of metal material directly influence to the capability and useful life of mechanism accessory. Metallography analyzing is the important means of controlling inhesion quality.

14. Wearing mechanism of cold rolling materials was investigated and analyzed by metallography and electronic scanning microscope.

15. Fracture analysis of intermediate tie rod was carried out by metallography, scanning electron microscope and EDS.

16. The structure of internal and Japan ones were studied by X ray and SEM. The grain distribution was statistically measured by quantitative metallography method.

17. The fracture of Turn Buckle was investigated by means of metallography and mechanical testing.

18. The fracture Turn Buckle was investigated by means of metallography and mechanical testing.

19. The microstructure of hot-dip aluminum coat of deformed low-carbon steel containing RE has been analyzed by metallography microscopy and XRD, and the forming mechanism has also been discussed.