Austenite layer and precipitation in high Co-Ni maraging steel

作者：Wang Chenchong; Zhang Chi^*; Yang Zhigang

来源：Micron, 2014, 67: 112-116.

DOI：10.1016/j.micron.2014.07.008

• Austenite layer
• Precipitated carbides
• High resolution transmission electron microscopy

In high Co-Ni maraging steel, austenite has a great effect on the fracture toughness of the steel and the precipitated carbides are the main strengthening phase. In this study, both austenite layers and precipitation were observed and their formation theory was analyzed by Thermo-Calc simulation and several reported results. TEM and HRTEM observation results showed that the thickness of the austenite layers was about 5-10 nm and the length of the needle-like precipitated carbides was less than 10 nm. The carbides maintained coherent or semi-coherent relation with the matrix.

• 出版日期2014-12
• 单位清华大学