Tribo-behavioural transition of Ti6Al4V as a function of sliding velocity and load under dry sliding conditions

被引:4
作者
Philip, Jibin T. [1 ,2 ]
Kuriachen, Basil [1 ,3 ]
Kumar, Deepak [4 ,5 ]
Mathew, Jose [3 ]
机构
[1] Natl Inst Technol Mizoram, Dept Mech Engn, Aizawl, India
[2] Indian Inst Sci, Dept Mech Engn, Bangalore, Karnataka, India
[3] Natl Inst Technol Calicut, Dept Mech Engn, Calicut, Kerala, India
[4] Indian Inst Technol Delhi, Dept Mech Engn, New Delhi, India
[5] Carnegie Mellon Univ, Dept Mech Engn, Pittsburgh, PA USA
关键词
Ti6Al4V; sliding wear; thermal softening; delamination; specific wear rate; coefficient of friction; frictional heating; spalling; WEAR BEHAVIOR; MILD WEAR; TI-6AL-4V; ALLOY; FRICTION; TOOLS; PERFORMANCE; MECHANISMS;
D O I
10.1080/17515831.2022.2139517
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, the dry sliding wear characteristics of Ti6Al4V (Ti64) - EN31 (steel) tribo-pair at incremental sliding velocity (SV, 0.838-1.466 ms(-1)) and load (L, 50-100 N) conditions are elucidated. As evident, specific wear rate (SWR) and coefficient of friction (CoF) increases and decreases, respectively with load and SV. The wear response of Ti64 undergoes a transition from composite type (oxidative and metallic) to delamination. The evolved oxides, viz. TiO and Ti8O15 were majorly in the form of free particulates. At low SV (0.838-1.047 ms(-1)) and low load (50-70 N), the movable particulates can activate a separation effect limiting the damage due to wear. During severe sliding (SV = 1.257-1.466 ms(-1) and L = 70-100 N), the combined influence of frictional heating instigated thermal softening, and the formation/retainment of hard-coarse particulates at the interaction zone causes perforation into the substratum, assisting in spalling. [GRAPHICS] .
引用
收藏
页码:99 / 118
页数:20
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