Microstructural examinationTwo piec

Microstructural examination
Two pieces of tubes that had been perforated were collected for investigation. Samples containing perforation were prepared for microscopic examination in transverse as well as longitudinal directions for microstructal analysis. These samples were individually mounted in electrically conductive copper-containing resin and polished using conventional metallographic techniques. One polished sample was etched with Vilella's reagent (1 g picric acid, 5 ml HCI and 95 ml ethyl alcohol) to reveal the microstructure of the tube and rest one had been examined as polished condition.
Microstructures are shown in Fig. 5a and b. Un-etched microstructure exhibited severe pitting on the inner wall of the tube and the etched microstructure resembles that of austenitic stainless steel revealing twinning at places.

ผลลัพธ์ (อังกฤษ) 2:

Microstructural Examination
of Two pieces that had been perforated Tubes were Collected for Investigation. Samples containing perforation were prepared for microscopic examination in transverse as well as longitudinal directions for microstructal analysis. These samples were individually mounted in electrically conductive copper-containing resin and polished using conventional metallographic techniques. Polished one sample was etched with Vilella's reagent (1 G picric acid, 5 ml and 95 ml HCI Ethyl alcohol) to Reveal the microstructure of the tube and Rest one had been examined as Polished condition.
Microstructures are shown in Fig. 5a and b. Un-etched microstructure exhibited severe pitting on the inner wall of the tube and the etched microstructure resembles that of austenitic stainless steel revealing twinning at places.