Machining performance of cryogenically treated Ti-5Al-2.5Sn titanium alloy in electric discharge machining: A comparative study

被引：15

作者：

Kumar, Sanjeev ^{[1
]}

Batish, Ajay ^{[1
]}

Singh, Rupinder ^{[2
]}

Singh, T. P. ^{[3
]}

机构：

[1] Thapar Univ, Dept Mech Engn, Patiala 147004, Punjab, India

[2] Guru Nanak Dev Engn Coll, Dept Prod Engn, Ludhiana, Punjab, India

[3] Symbiosis Inst Technol, Pune, Maharashtra, India

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2017年 / 231卷 / 11期

关键词：

Electric discharge machining; titanium alloys; shallow cryogenic treatment; deep cryogenic treatment; material removal rate; tool wear rate; Surface roughness; microhardness; CYCLE FATIGUE PROPERTIES; EDM PARAMETERS; MACHINABILITY; TI-6AL-4V; SURFACE; OPTIMIZATION; WATER;

D O I：

10.1177/0954406215628030

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present study, the effect of cryogenic treatment on the machining performance of Ti-5Al-2.5Sn alpha titanium alloy was investigated during electric discharge machining. Untreated, shallow cryogenically treated (-110?), and deep cryogenically treated (-184?) titanium alloys were machined by varying current and pulse-on-time. The machining performance was measured in terms of higher material removal rate and microhardness and low tool wear rate and surface roughness. The results showed a significant improvement in the machining performance with deep cryogenically treated alloy when compared with shallow and untreated alloy. Current and pulse-on-time also affected the machinability of titanium alloy. Higher material removal rate and microhardness were observed when titanium alloy was machined at high current and pulse-on-time. During machining, carbon was deposited on the machined surface due to the breakdown of hydrocarbon dielectric at high temperature thereby, affecting its properties.

引用

页码：2017 / 2024

页数：8

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