Effects of test temperature on the ball-on-slab wear behavior of nickel-titanium shape memory alloys fabricated by laser powder bed fusion

被引：5
|
作者：
Huang, Xianghui [1 ]
Kang, Nan [1 ]
Coddet, Pierre [2 ]
El Mansori, Mohamed [1 ,3 ]
机构：
[1] HESAM Univ, Arts & Metiers Inst Technol, MSMP, F-51000 Chalons Sur Marne, France
[2] Mines St Etienne, CMP, F-13514 Gardanne, France
[3] Texas A&M Engn Expt Stn, College Stn, TX 77843 USA
来源：
TRIBOLOGY INTERNATIONAL | 2024年 / 196卷
关键词：
Laser powder bed fusion; NiTi alloys; Wear behavior; Temperature; NITI ALLOY; MARTENSITIC-TRANSFORMATION; THERMOMECHANICAL RESPONSE; TRIBOLOGICAL BEHAVIOR; HEAT-TREATMENT; SLIDING WEAR; TINI; STEEL; MICROSTRUCTURE; DEFORMATION;
D O I：
10.1016/j.triboint.2024.109666
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work investigated the effects of test temperature on the ball -on -slab wear behavior of nickel -titanium (NiTi) alloy fabricated by laser powder bed fusion. The average steady-state coefficients of friction (COFs) at 16 degrees C, 36 degrees C, and 56 degrees C are similar, with an average of 0.61 (standard deviation 0.03), rising to 0.75 at 76 degrees C. The larger COFs at 76 degrees C can be ascribed to the large strain fluctuations around the estimated contact stress and more bulging debris. However, after 60 min of wear, the specific wear rate at 76 degrees C is the smallest (1.36 +/- 0.4 x 10-4 mg/N & sdot;m) due to the largest elastic deformation energy of austenite and more adhesive debris. In addition, the dominant wear mechanisms of adhesive, abrasive, oxidative and delamination were discussed in depth.
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页数：14
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