Cracking behavior in a dissimilar weld between high silicon nodular cast iron and ferritic stainless steel

2010 ◽  
Vol 16 (3) ◽  
pp. 483-488 ◽  
Author(s):  
Sanghoon Kim ◽  
Sangchul Lee ◽  
Kyutae Han ◽  
Seunggab Hong ◽  
Changhee Lee
Keyword(s):  
Stainless Steel ◽  
Cast Iron ◽  
Ferritic Stainless Steel ◽  
Nodular Cast Iron ◽  
Cracking Behavior ◽  
Dissimilar Weld ◽  
High Silicon

scholarly journals Influence of Aluminum on Fatigue Strength of Solution-Strengthened Nodular Cast Iron

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 311
Author(s):  
Christian Gebhardt ◽  
Johannes Nellessen ◽  
Andreas Bührig-Polaczek ◽  
Christoph Broeckmann
Keyword(s):  
Cast Iron ◽  
Fatigue Strength ◽  
Aluminum Content ◽  
Nodular Cast Iron ◽  
Fatigue Properties ◽  
Matrix Microstructure ◽  
Graphite Morphology ◽  
Wide Range ◽  
Negative Effect ◽  
High Silicon

The fatigue strength of high silicon-alloyed nodular cast iron is influenced by casting defects and graphite precipitates. The literature as well as the findings of this work show that these microstructural constituents can be tailored by controlling silicon microsegregation. In addition, segregations also affect the ferritic matrix microstructure locally. In the present work, silicon segregations in high silicon-alloyed ductile iron are specifically manipulated by small additions of aluminum. It was demonstrated how the aluminum content affects a wide range of microstructural constituents across a variety of length scales. Specimens from alloys with small additions of aluminum were fabricated and tested by rotating bending. Results show that the fatigue strength can be increased compared to a reference alloy with no aluminum. Microstructure analysis as well as fractography were performed concluding that microstructural changes could be attributed to the increased aluminum content, which allows the fatigue properties to be tailored deliberately. However, according to the results of this study, the negative effect of aluminum on castability and graphite morphology limits the maximum content to approximately 0.2 wt.%.

Influence of laser power on interface characteristics and cracking behavior during laser remanufacturing of nodular cast iron

2021 ◽  
Vol 122 ◽  
pp. 105226
Author(s):  
Yongjian Li ◽  
Xiaoting Liu ◽  
Shiyun Dong ◽  
Xudong Ren ◽  
Shixing Yan ◽  
...  
Keyword(s):  
Cast Iron ◽  
Laser Power ◽  
Nodular Cast Iron ◽  
Cracking Behavior ◽  
Interface Characteristics
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