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Effect of TiB2 and Al3Ti on the microstructure,mechanical properties and fracture behaviour of near eutectic Al−12.6Si alloy

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International Journal of Minerals,Metallurgy and Materials 2021年第7期28卷 1174-1185页

作者： surajit basak Prosanta Biswas surajit Patra Himadri Roy Manas Kumar Mondal Department of Metallurgical and Materials Engineering National Institute of TechnologyDurgapurDurgapur-713209West BengalIndia Department of NDT and Metallurgy Group CSIR-Central Mechanical Engineering Research InstituteDurgapur-713209West BengalIndia

A near eutectic Al−12.6Si alloy was developed with 0.0wt%,2.0wt%,4.0wt%,and 6.0wt%Al−5Ti−1B master *** micro-structural morphology,hardness,tensile strength,elongation,and fracture behaviour of the alloys were *** unmodified Al−12.6Si al-loy has an irregular needle and plate-like eutectic silicon(ESi)and coarse polygonal primary silicon(PSi)particles in the matrix-likeα-Al *** P_(Si),E_(Si),andα-Al morphology and volume fraction were changed due to the addition of the Al−5Ti−1B master *** hardness,UTS,and elongation improved due to the microstructural ***-sized in-situ Al3Ti particles and ex-situ TiB_(2)particles caused the mi-crostructural *** fracture images of the developed alloys exhibit a ductile and brittle mode of fracture at the same *** Al−5Ti−1B modified alloys have a more ductile mode of fracture and more dimples compared to the unmodified alloy.

关键词： Al−Si alloy Al−5Ti−1B modification modification mechanism mechanical properties fracture analysis

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ISSR Fingerprinting to Ascertain the Genetic Relationship of Curcuma sp. of Tripura

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American Journal of Plant Sciences 2016年第2期7卷 259-266页

作者： Kishan Saha Rabindra Kumar Sinha surajit basak Sangram Sinha Department of Botany Tripura University Suryamaninagar India Department of Molecular Biology and Bioinformatics Tripura University Suryamaninagar India

Molecular fingerprints of four different species of Curcuma, viz., C. amada, C. caesia, C. longa and C. zedoaria, found in Tripura were developed using Inter Simple Sequence Repeats. Twenty ISSR primers generated 116 loci amplified in the range of 200 - 5000 bp with an average of 5.8 alleles and 1.6 effective alleles per locus. The percentage of polymorphic band was found to be 86.29 with an average of 5.15 per primer. Based on UPGMA algorithm these four species are placed in two different clusters that validate the classification based on external and internal morphological characters. The polymorphic ISSR markers generated from this study will be useful for understanding the genetic relationship of different species of the genus Curcuma.

关键词： Curcuma Genetic Diversity Inter Simple Sequence Repeats Polymerase Chain Reaction Taxonomy Zingiberaceae

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