Development of whisker reinforced alumina ceramic tool for high speed machining of Ni-based super alloy

镍基高温合金高速加工晶须强化氧化铝陶瓷刀具的研制

• 批准号: 06453074
• 负责人: YAMANE Yasuo
• 金额: $ 4.29万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06453074/
• 关键词: Ni-based super alloy; ceramic tool; TiC whisker Alumina; alumina; Tool wear; 超耐熱合金; 切削加工; ウィスカ

TiC whisker reinforced alumina ceramic tool was developed to machine Ni-based super alloy with high cutting speed. The results obtained are as follows ;1. Mean diameter of TiC whisker which are newly developed ia around 1 micro-meters.2. Alumina ceramics with 30 to 40% of TiC whiskers sintered by hot-pressing (2023K,50MPa) showed maximum fracture toughness compare to other volume content of the whisker.3. The newly development ceramic tool have about 2000 of Vicker's hardness, 920 Mpa of 3-point bending strength and 5.3Mpa.m1/2 off racture toughness. All these value are higher than those of commercially available alumina ceramic tools.4. The new ceramic tool shows higher fracture toughness than conventional black type ceramic tool in turning of Plain carbon steel S45C.However the new tool have lower wear resistance than the black one. In machining lnconel 7 18, cutting performance of the new tool is almost same as that of the black one, that means the new tool have less cutting performance than SiC whisker reinforced alumina ceramic tool.At this stage, the cutting performance of the newly developed TiC whisker reinforced alumina ceramic tool is almost same as a conventional type black ceramic tool when cutting Ni-based super alloy lnconel 718. However, there is a possibility to improve cutting performance of the tool by changing the composition.

为实现镍基高温合金的高速加工，研制了TiC晶须增强氧化铝陶瓷刀具。所得结果如下：1.新开发的TiC晶须的平均直径约为1微米。热压烧结的氧化铝陶瓷中TiC晶须的含量为30%~40%(2023K，50 Mpa)时，其断裂韧性最大。新研制的陶瓷刀具的维氏硬度约为2000，三点弯曲强度为920 Mpa，断裂韧性为5.3 Mpa·m1/2。这些数值均高于市售氧化铝陶瓷刀具。在普通碳钢S45C的车削加工中，新型陶瓷刀具的断裂韧性高于传统的黑色陶瓷刀具，但其耐磨性低于黑色陶瓷刀具。在加工Inconel 718时，新刀具的切削性能与黑色刀具基本相同，表明新刀具的切削性能低于碳化硅晶须增强氧化铝陶瓷刀具。在此阶段，新研制的TiC晶须增强氧化铝陶瓷刀具对镍基高温合金Inconel 718的切削性能与传统黑色陶瓷刀具基本相同。然而，有可能通过改变成分来改善刀具的切割性能。

项目成果

Y.Yamane,K.Hayashi,N.Narutaki: "High speed machining of Ni-based super alloys" 3rd International Conference on The Behaviour of Materials in Machining,15-17 Nov.1994,U.K.120-137 (1994)

Y.Yamane，K.Hayashi，N.Narutaki：“镍基超级合金的高速加工”第三届材料加工行为国际会议，1994 年 11 月 15-17 日，U.K.120-137 (1994)

山根八洲男、林桂、鳴瀧則彦: "セラミック工具によるインコネル718の高速切削(第2報)" 精密工学会誌. 61. 1463-1467 (1995)

Yasuo Yamane、Katsura Hayashi、Norihiko Narutaki：“使用陶瓷刀具高速切削 Inconel 718（第二次报告）” 日本精密工程学会杂志 61. 1463-1467 (1995)。

Yasuo yamane, Katsura Hayashi and Norihiko Narutaki: "High Speed Machining of lnconel 718 with Ceramic Tools (2nd Report)" Journal of J.S.P.E. 61-10. 1463-1467 (1995)

Yasuo yamane、Katsura Hayashi 和 Norihiko Narutaki：“使用陶瓷刀具高速加工 lnconel 718（第二份报告）” J.S.P.E 杂志

山根八洲男、林 桂、鳴瀧則彦: "セラミック工具によるインコネル718の高速切削(第2報)" 精密工学会誌. 61-10. 1463-1467 (1995)

Yasuo Yamane、Katsura Hayashi、Norihiko Narutaki：“使用陶瓷刀具高速切削 Inconel 718（第二次报告）”日本精密工程学会杂志 61-10（1995 年）。