Two types of checkerboard-like microstructures in Au-Cu-Pd ternary alloys

被引：0

作者：

Winn, H. ^{[1
]}

Tanaka, Y. ^{[1
]}

Shiraishi, T. ^{[1
]}

Udoh, K. ^{[2
]}

Miura, E. ^{[1
]}

Hernandez, R.I. ^{[1
]}

Takuma, Y. ^{[1
]}

Hisatsune, K. ^{[1
]}

机构：

[1] Dept. of Dental Materials Science, Nagasaki Univ. Sch. Dent., 852-8588, Nagasaki, Japan

[2] Dept. of Dent. Materials Engineering, Fac. Dent., Kyushu Univ., 812-8582, Fukuoka, Japan

来源：

| 1600年 / Elsevier Sequoia SA, Lausanne, Switzerland卷 / 306期

关键词：

Age hardening - Composition - Crystal structure - Electron diffraction - Hardness testing - Metallographic microstructure - Phase transitions - Ternary systems - Transmission electron microscopy;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The phase transformation process in Au-Cu-Pd ternary alloys with the compositions within or near the two-phase region (Au3Cu+AuCu I) was studied by means of transmission electron microscopy and hardness testing. Two types of characteristic checkerboard-like microstructures were observed: (1) the coexistence of the Au3Cu and AuCu I ordered phases, and (2) the coexistence of the AuCu I ordered phase and disordered phase with face-centered cubic structure. Different age-hardening behaviors were recognized: The high hardness value in the former was maintained for prolonged aging periods, and that produced in the latter was maintained to a certain period followed by over-aging.

引用

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