scholarly journals Corrosion of Spheroidal Graphite Cast Iron with Different Boundary Length Between Graphite Nodule and Matrix in Sulfuric Acid Aqueous Solution

2014 ◽  
Vol 63 (5) ◽  
pp. 337-340
Author(s):  
Yuuki Kuwahara ◽  
Yoshikazu Miyata ◽  
Shukuji Asakura ◽  
Tadashi Shinohara ◽  
Takao Yakou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Cast Iron ◽  
Sulfuric Acid ◽  
Graphite Nodule ◽  
Spheroidal Graphite ◽  
Boundary Length ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Acid Aqueous Solution

Hydrogen Evolution Reaction on Spheroidal Graphite Cast Iron with Different Graphite Areas in Sulfuric Acid Solutions

2014 ◽  
Vol 82 (2) ◽  
pp. 104-108
Author(s):  
Yoshikazu MIYATA ◽  
Yuki KUWAHARA ◽  
Shukuji ASAKURA ◽  
Tadashi SHINOHARA ◽  
Takao YAKOU ◽  
...  
Keyword(s):  
Cast Iron ◽  
Sulfuric Acid ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Spheroidal Graphite ◽  
Acid Solutions ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Sulfuric Acid Solutions

Influences of Silicon and Phosphorus Contents and Cooling Rate on JIC Fracture Toughness of Ferritic Spheroidal Graphite Cast Iron

1984 ◽  
Vol 34 ◽  
Author(s):  
Shinichiro Komatsu ◽  
Toshio Shiota
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
Cooling Rate ◽  
Compact Tension ◽  
Graphite Nodule ◽  
Spheroidal Graphite ◽  
Test Pieces ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Curve Method

ABSTRACTThe influences of silicon and phosphorus contents and cooling rate on JIC fracture toughness of ferritic spheroidal graphite cast iron were investigated by 15mm thick compact tension test-pieces. The JIC values were measured by means of the R-curve method for most cases at 20°C, and by means of the maximum J value method for the cases at -100° C. The results obtained are summarized as follows. At 20WC, the specimens with silicon contents less than 3.2% showed the ductile Load-COD relations, but a specimen with 3.5%Si showed a brittle Load-COD relation and the JIC decreased greatly. Increasing phosphorus content between 0.006% and 0.26% made the JIC value decrease gradually and made the slope of the R-curve decrease greatly. Difference in cooling rate produced differences in graphite nodule diameters and ferrite grain sizes. At 20°C, the larger the specimen's average graphite nodule diameter was, the larger the JIC value was. At -100° C, the Jic values of all the specimens tested decreased largely, and the influences of these factors became very different from those at 20° C.

Corrosion Behavior of Spheroidal Graphite Cast Iron with Different Carbon Contents in Sulfuric Acid Solutions

CORROSION ◽  
10.5006/1147 ◽  
2014 ◽  
Vol 70 (8) ◽  
pp. 796-803
Author(s):  
Y. Miyata ◽  
Y. Kuwahara ◽  
S. Asakura ◽  
T. Shinohara ◽  
T. Yakou ◽  
...  
Keyword(s):  
Cast Iron ◽  
Sulfuric Acid ◽  
Corrosion Behavior ◽  
Spheroidal Graphite ◽  
Acid Solutions ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Sulfuric Acid Solutions

Effect of Mean Stress on Fatigue Strength of Spheroidal Graphite Cast Iron

2013 ◽  
Vol 750 ◽  
pp. 192-195
Author(s):  
Norio Shinohara ◽  
Nobusuke Hattori ◽  
M.T.I. Khan
Keyword(s):  
Cast Iron ◽  
Fatigue Strength ◽  
Fatigue Limit ◽  
Graphite Nodule ◽  
Systematic Research ◽  
Spheroidal Graphite ◽  
Mean Stress ◽  
Structural Factors ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron

Mechanical properties, especially fatigue strength, of ferritic spheroidal graphite cast iron might depend not only on the graphite size but also on the ferrite grain size, little systematic research has been made on these factors. To clarify the influences of these structural factors as well as loading condition, fatigue tests have been carried out on ferritic spheroidal graphite cast iron with different sizes of graphite nodules and ferrite grains, under the axial loading with mean stress from -70MPa to 240MPa. The results obtained in this study are summarized as follows: (1) The fatigue limits are decreased with increasing graphite nodule and matrix grain sizes. (2) The fatigue limit decreases with increasing tensile mean stress. The fatigue limit at an arbitrary mean stress has been estimated by the modified Goodman diagram as well. (3) The parameter α is evaluated from the experimental results relating to the stress ratio R, for the mean stress acting on the tensile side and on the compressive side separately. For the case of R0, the value of α is 0.324. The result has been applied to the fatigue limit evaluation equation of Y.Murakami et al, the fatigue limit ratio falls within the range of about ±10%.

Effect of Eight Individual Rare-earth Elements on the Graphite Nodule Count of a Thin-section of Spheroidal-graphite Cast Iron

Cast Metals ◽  
1990 ◽  
Vol 3 (2) ◽  
pp. 73-81 ◽  
Author(s):  
H. Horie ◽  
S. Hiratsuka ◽  
T. Kowata ◽  
Y. Iwamochi ◽  
Y. Shobuzawa ◽  
...  
Keyword(s):  
Rare Earth ◽  
Cast Iron ◽  
Rare Earth Elements ◽  
Thin Section ◽  
Graphite Nodule ◽  
Spheroidal Graphite ◽  
Nodule Count ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron
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