An experimental research on the machinability of a high temperature titanium alloy BTi-6431S in turning process

Gao, Yanfeng1; Wu, Yongbo1,2; Xiao, Jianhua1; Lu, Dong1,2

2018-09-19

10.1051/mfreview/2018011

Manufacturing Review   影响因子和分区

2265-4224

Titanium alloys are extensively applied in the aircraft manufacturing due to their excellent mechanical and physical properties. At present, the alpha+beta alloy Ti6Al4V is the most commonly used titanium alloy in the industry. However, the highest temperature that it can be used only up to 300 degrees C. BTi-6431S is one of the latest developed high temperature titanium alloys, which belongs to the near-a alloy group and has considerably high tensile strength at 650 degrees C. This paper investigates the machinability of BTi-6431S in the terms of cutting forces, chip formation and tool wear. The experiments are carried out in a range of cutting parameters and the results had been investigated and analyzed. The investigation shows that: (1) the specific cutting forces in the machining of BTi-6431S alloy are higher than in the machining of Ti6Al4V alloy; (2) the regular saw-tooth chips more easily formed and the shear bands are narrower in the machining of BTi-6431S; (3) SEM and EDS observations of the worn tools indicate that more cobalt elements diffuse into the workpiece from tool inserts during machining of BTi-6431S alloy, which significantly aggravates tool wear rate. The experimental results indicate that the machinability of BTi-6431S near alpha titanium alloy is significantly lower than Ti-6Al-4V alloy.

High temperature titanium alloy machinability cutting forces chip formation tool wear

ESCI ; EI

英语

其他

Natural Science Foundation of Jiangxi Province[20171BBE50011]

Engineering

Engineering, Manufacturing

WOS:000444987700001

EDP SCIENCES S A

20191506749289

Aluminum alloys ; Cutting ; Cutting tools ; High strength alloys ; Machinability ; Tensile strength ; Ternary alloys ; Turning ; Vanadium alloys ; Wear of materials

Metallurgy:531.1 ; Aluminum Alloys:541.2 ; Titanium and Alloys:542.3 ; Vanadium and Alloys:543.6 ; Machine Tool Accessories:603.2 ; Machining Operations:604.2 ; Materials Science:951

Web of Science

1.Nanchang Hangkong Univ, Sch Aeronaut Mfg Engn, Nanchang 330063, Jiangxi, Peoples R China;
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Gao, Yanfeng,Wu, Yongbo,Xiao, Jianhua,et al. An experimental research on the machinability of a high temperature titanium alloy BTi-6431S in turning process[J]. Manufacturing Review,2018,5.

Gao, Yanfeng,Wu, Yongbo,Xiao, Jianhua,&Lu, Dong.(2018).An experimental research on the machinability of a high temperature titanium alloy BTi-6431S in turning process.Manufacturing Review,5.

Gao, Yanfeng,et al."An experimental research on the machinability of a high temperature titanium alloy BTi-6431S in turning process".Manufacturing Review 5(2018).