- Tytuł:
- The strengthening of weight heavy alloys during heat treatment
- Autorzy:
-
Kaczorowski, M.
Skoczylas, P.
Krzyńska, A.
Kaniewski, J. - Powiązania:
- https://bibliotekanauki.pl/articles/380302.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
utwardzanie wydzieleniowe
wolframowy stop ciężki
właściwości mechaniczne
precipitation hardening
weight heavy alloys (WHA)
mechanical properties
structure - Opis:
- The results of studies of W-Ni-Co-Fe experimental alloy, with chemical composition assuring a possibility of producing Ni-based supersaturated solid solution are presented. The alloy was prepared from tungsten, nickel, cobalt and iron powders which were first mixed then melted in a ceramic crucible where they slowly solidified in hydrogen atmosphere. Next specimens were cut from the casting and heated at a temperature 950oC. After solution treatment the specimens were water quenched and then aged for 20 h at a temperature 300oC. The specimens were subjected to microhardness measurements and structure investigations. The latter included both conventional metallography and SEM observations. Moreover, for some specimens X-ray diffractometry studies and TEM investigations were conducted. It was concluded that quenching lead to an increase of tungsten concentration in nickel matrix which was confirmed by Ni lattice parameter increase. Aging of supersaturated solid solution caused strengthening of the Ni-based matrix, which was proved by hardness measurements. The TEM observation did not yield explicit proofs that the precipitation process could be responsible for strengthening of the alloy.
- Źródło:
-
Archives of Foundry Engineering; 2012, 12, 4; 75-80
1897-3310
2299-2944 - Pojawia się w:
- Archives of Foundry Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł