The effect of grain size and hardness of wrought Alloy 718 on the wear of cemented carbide tools

被引：54
作者：
Olovsjo, S. [1 ]
Wretland, A. [2 ]
Sjoberg, G. [2 ]
机构：
[1] Chalmers Univ Technol, Dept Mat & Mfg Technol, S-41296 Gothenburg, Sweden
[2] Volvo Aero Corp, S-46130 Trollhattan, Sweden
来源：
WEAR | 2010年 / 268卷 / 9-10期
关键词：
Alloy; 718; Superalloy; Microstructure; Machining; Tool wear; Burr; MACHINABILITY;
D O I：
10.1016/j.wear.2010.01.017
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The effects of grain size and hardness of wrought Alloy 718 on the wear of cemented carbide tools were examined by measuring the actual progression of wear in a specific transverse turning operation. Four different conditions of the same material from the same batch were studied fine grain material in the soft, solution annealed state and in the precipitation hardened state, and large grain material in the same two conditions. While flank wear, as expected, correlated strongly with hardness the effect of grain size was much more limited. A striking effect was that of the grain size on the notch wear - one of the limiting factors for tool life - which could be clearly related to the amount of burrs formed in the large grain size material both in the solution annealed and fully precipitation hardened condition. The influence of grain size and hardness on the deformed layer of the work piece material and on the morphology of the chips was clearly visible. (c) 2010 Elsevier B.V. All rights reserved.
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页码：1045 / 1052
页数：8
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