Analyses of the failures on shear cutting blades after trimming of ultra high-strength steel

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• 作者：Dongmin Son^a ; ^b ; Hoyoung Kim^c ; Jun-Yun Kang^c ; ^{firice@kims.re.kr} ; Hyo Yun Yun^d ; Jae-Jin Lee^d ; Soon Keun Park^a ; Tae-Ho Lee^c ; Jehyun Lee^b ; ^{ljh@changwon.ac.kr}
• 关键词：Tool and die failures ; Cold working ; Metallurgical failure analysis ; Microstructures
• 刊名：Engineering Failure Analysis
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：71
• 期：Complete
• 页码：148-156
• 全文大小：2608 K
• 卷排序：71

文摘

Two types of cold-work tool steels were compared in shear cutting of steel sheets. Insufficient hardness with less carbide led to more wear and plastic deformation. Excellent impact toughness did not ensure the resistance to chipping. Instability of retained austenite contributed to the development of chipping.