Decomposition kinetics of Ni-11.8at.% Ti at 853 K

✍ Scribed by M. Lambrigger; H.A. Calderon; G. Kostorz

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 686 KB
• Volume: 158
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(92)90010-x

✦ Synopsis

The kinetics of the decomposition process of .%Ti single crystals at 853 K are studied by high resolutiorl X-ray diffractometry, conventional transmission electron microscopy, microhardness measurements and compression tests. The kinetics of the first 62.5 h after quenching cannot be interpreted in a simple way. Concentration waves along (100), growing in amplitude and wavelength, are observed after aging for between 62.5 and 500 h. The microyield point and the microhardness reach a maximum. Formation of y' particles is observed after aging for between 500 and 1000 h. The macroyield stress still slightly increases during particle formation.