Microhardness and microstructure evolution of ultra-fine grained Ti-15Mo and TIMETAL LCB alloys prepared by high pressure torsion

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• 作者：Kristí ; na Vá ; clavová ; ^a ; ^{kristina.vaclavova@gmail.com} ; Josef Strá ; sk&yacute ; ^a ; Veronika Polyakova^b ; Jitka Strá ; ská ; ^a ; Jitka Nejezchlebová ; ^c ; Hanu&scaron ; Seiner^d ; Irina Semenova^b ; Milo&scaron ; Janeček^a
• 关键词：Metastable β-Ti alloys ; High pressure torsion ; Microhardness ; Microstructure evolution ; Twinning-induced grain refinement ; Decreasing elastic constants
• 刊名：Materials Science and Engineering: A
• 出版年：2017
• 出版时间：13 January 2017
• 年：2017
• 卷：682
• 期：Complete
• 页码：220-228
• 全文大小：2016 K
• 卷排序：682

文摘

Two metastable β-Ti alloys were subjected to high pressure torsion. Microstructure fragmentation increases with increasing strain. Twinning system {1 1 2} <111> is active during deformation by high pressure torsion. Hardenability exponent for both studied alloys is higher than for Ti-6Al-4V alloy. Young's modulus first increases due to high pressure torsion and then decreases with increasing strain.