Effect of Exposure to Water on the Tensile Properties of Ductile Iron |
Contents
16 | 8 |
EXPERIMENTAL PROCEDURE | 14 |
Chemical Compositions of Ductile Irons Tested | 15 |
20 other sections not shown
Common terms and phrases
30 days 48 days 600X Microstructure aerated air cooled Annealed appear as-cast austenite batch carbide cast irons cell boundaries cleavage composition condition corrosion crucible DECREASE DECREASE IN TENSILE determined ductile iron effect embrittlement environment Etched evident exposed facets ferrite followed fractograph fracture paths gage given grain boundaries Hardness BHN heat treatment higher hydrogen immersion important inch increase iron 2 samples length less machined material matrix measure mechanical ment metal methods Microstructure of iron mixture Normalized observed obtained occur oil quenched oxygen particles Percent Decrease percent Nital Picral etched PLASTIC present psi x quenched and tempered range reaction reducing regions reported respectively rust saturation segregation shown in Fig shows steel stopper strain Strength Percent stress structure TABLE tearing temperature tempered at 650°F tempered ductile irons tempered martensite Tensile Elongation tensile properties tensile strength TENSILE TEST RESULTS tested in air Typical unexposed various visible