Tham khảo tài liệu 'volume 13a - corrosion fundamentals, testing, and protection part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | A variety of specimen shapes and sizes can be used. The most common is a smooth bar tensile coup described in ASTM E 8 Ref 22 . The specimen is exposed to the environment and stressed monotonicalh slow but constant rate until complete fracture occurs. Typically the output is a stress versus elongation. are usually conducted over a range of strain rates for exam etpfDD8 mm mm s. Interpretation of test results is based on one or more of the following parameters Time to failure Ductility for example elongation and or reduction in cross-sectional area at the fracture Maximum stress ultimate tensile strength or UTS achieved Fracture energy that is the area bounded by the stress-elongation curve Potentiostatic Slow strain Rate Tensile Testing. Studies have been conducted on the use of dissociated under potentiostatic conditions that produce hydrogen on the surface of the tensile test specimen while I slow strain rate displacement control. Results suggest that hydrogen is the most significant parameb hydrogen-sulfide see found in oil fields Ref 23 . References cited in this section 1. L. Raymond Embrittlement Testing STP 543 ASTM International 1974 2. Standard Method for Mechanical Hydrogen Embrittlement Testing of Plating Processes and Aircri Maintenance Chemicals ĨF 5VQnnualBook of ASTMStandards ASTM International 3. Standard Method for Electronic Hydrogen Embrittlement Test for Cadmium-Electroplating Processes F 326 Annual Book of ASTMStandards ASTM International 4. . Bernstein and . Thompson EHydrogen in Metals American Society for Metals 1973 5. . Beachem EdHydrogen Damage American Society for Metals 1977 6. . Interrante and . Pressouyre EHj rent Solutions to Hydrogen Problems in Steels American Society for Metals 1983 7. R. Gibala and F. Hehemann EHydrogen Embrittlement and Stress Corrosion Cracking American Society for Metals 1984 8. L. Raymond Embrittlement Prevention and Control STP 962 ASTM International 1987 9. . .
