Macro-defects characterization in cast CA-6NM martensitic stainless steel

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• 作者：Shilan Meimandi^a ; ^{shilan.meimandi.1@ens.etsmtl.ca} ; Nicolas Vanderesse^a ; ^{nicolas.vanderesse@ens.etsmtl.ca} ; Denis Thibault^b ; ^{thibault.denis@ireq.ca} ; Philippe Bocher^a ; ^{philippe.bocher@etsmtl.ca} ; Martin Viens^a ; ^{martin.viens@etsmtl.ca}
• 关键词：Hydraulic-turbine ; Macro-shrinkage porosity ; Cast martensitic stainless steel ; Characterization ; Shape analysis
• 刊名：Materials Characterization
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：124
• 期：Complete
• 页码：31-39
• 全文大小：3250 K
• 卷排序：124

文摘

Cast CA-6NM, used for hydraulic turbine runners, is specifically studied. Salami sectioning is proposed to complement information about macro-defects. Most of defects found, known as shrinkage porosities, show crack-like endings. Higher severity level macro-defects display larger Murakami parameter (area). Above mentioned defects are detrimental to parts life.