X-Ray Study of Fracture Mechanisms of Partially Stabilized Zirconia

部分稳定氧化锆断裂机制的X射线研究

• 批准号: 63550067
• 负责人: TANAKA Keisuke
• 金额: $ 1.34万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550067/
• 关键词: Ceramics; Fracture; X-Ray diffraction; Crack growth; Fractography; Residual stress; X線回析; き裂伝ぱ

1. For accurate measurements of residual stresses in ceramics by X-rays, the combination between characteristic X-rays and diffraction plane was determined for zirconia and other engineering ceramics. The X-ray stress constant was determined for these diffraction planes.2. For zirconia-alumina composite, the mean stress in each phase was measured by X- rays, and then the macrostress and microstress were calculated on the basis of rule of mixture.3. The X-ray method to measure the amount of martensitic transformation from tetragonal to monoclinic phase in zirconia was established.4. The bending tests of precracked and notched specimens of alumina, silicon nitride and TiC-Cr_3C_2 composite were conducted, and the distribution of the residual stress on the fracture surface was measured by X-rays. For the case of silicon nitride, the compressive residual stress was measured near the fracture surface. This compression is related to the dilatation due to microcracking.5. The depth of inelastic deformation from the surface determined by X-rays was proportional to the square of the critical stress intensity factor.

1. 为了通过X射线精确测量陶瓷中的残余应力，确定了氧化锆等工程陶瓷的特征X射线与衍射面的组合。确定了这些衍射面的X射线应力常数。 2．对于氧化锆-氧化铝复合材料，通过X射线测量各相的平均应力，然后根据混合规律计算出宏观应力和微观应力。 3．建立了X射线测量氧化锆中马氏体从四方相向单斜相转变量的方法。 4．对氧化铝、氮化硅和TiC-Cr_3C_2复合材料的预裂纹和缺口试件进行了弯曲试验，并用X射线测量了断口残余应力的分布。对于氮化硅的情况，在断裂表面附近测量压缩残余应力。这种压缩与微裂纹引起的膨胀有关。5．由 X 射线测定的表面非弹性变形深度与临界应力强度因子的平方成正比。

项目成果

Tadao Mishima: "X-Ray Fractographic Study on Impact Fracture Surface of Alumina Ceramics" Proceedings of 2nd International Conference on Residual Stresses. 920-925 (1989)

三岛忠雄：“氧化铝陶瓷冲击断裂表面的 X 射线断口研究”第二届国际残余应力会议论文集。

Keisuke Tanaka: "Elastic Constants of Ceramics for XーRay Residual Stress Measurement" Proceedings of 2nd International Conference on Residual Stresses. 328-334 (1989)

Keisuke Tanaka：“用于 X 射线残余应力测量的陶瓷弹性常数”第二届残余应力国际会议论文集 328-334 (1989)。

田中啓介: 日本材料学会第25回X線材料強度に関するシンポジウム講演論文集. 25. 199-206 (1988)

Keisuke Tanaka：日本材料学会第 25 届 X 射线材料强度研讨会论文集 25. 199-206 (1988)。

田中啓介: "ジルコニア・アルミナ複合セラミックスのX線的弾性定数" 材料. 38. 840-846 (1989)

Keisuke Tanaka：“氧化锆-氧化铝复合陶瓷的 X 射线弹性常数”材料 38. 840-846 (1989)。

Keisuke Tanaka: "Elastic Constants of Ceramics for X-Ray Residual Stress Measurement" Proc. of 2nd International Conference on Residual Stresses, pp.328-334, 1989.

Keisuke Tanaka：“用于 X 射线残余应力测量的陶瓷弹性常数”Proc。