Effect of heat treatment on tribological behavior of direct metal laser sintered alloy 718

被引：0
作者：
Muthu, S. M. [1 ,2 ]
Veeman, Dhinakaran [1 ]
Asokan, Vijayakumar [1 ]
Sathishkumar, M. [3 ,6 ]
Kannan, L. Vadivel [4 ]
Vignesh, M. [3 ]
Rajeshkumar, L. [5 ]
机构：
[1] Chennai Inst Technol, Ctr Addit Mfg, Chennai 600069, India
[2] Korea Adv Inst Sci & Technol, Dept Nucl & Quantum Engn, Daejeon 34141, South Korea
[3] Amrita Vishwa Vidyapeetham, Amrita Sch Engn, Dept Mech Engn, Chennai, India
[4] PSNA Coll Engn & Technol, Dept Mech Engn, Dindigul 624622, India
[5] Alliance Univ, AU Sophisticated Testing & Instrumentat Ctr STIC, Alliance Sch Appl Engn, Bengaluru 562106, India
[6] Alliance Univ, Alliance Sch Appl Engn, Dept Mech Engn, Bengaluru 562106, India
来源：
ISCIENCE | 2024年 / 27卷 / 12期
关键词：
WEAR;
D O I：
10.1016/j.isci.2024.111415
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The main aim of this work is to enhance the wear performance of the direct metal laser sintered (DMLS) alloy 718 by solution treatment aging (STA) method at room temperature (RT) (28 degrees C) and 400 degrees C in dry sliding conditions. The effect of microstructure, phase analysis, and microhardness on the wear behavior and the influence of STA on the specimen at elevated temperatures were studied. The microstructure revealed the presence of melt pool boundary (MPB) in untreated DMLS alloy while recrystallized grains were observed in the STA-treated alloy. The wear results elucidated that STA-treated alloy exhibited better wear resistance than as-built alloy due to high hardness at both conditions. Severe wear loss occurred at high temperatures caused by the delamination of the brittle oxide glazing layer, while oxidation and adhesive wear were the predominant wear mechanisms. Results also portrayed that the test temperature and STA treatment equally influenced the wear behavior of alloy 718.
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页数：12
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