Czasopismo | INŻYNIERIA MATERIAŁOWA | Rocznik 2013 - zeszyt 4

A quantitative description of the microstructure of hot-deformed Ni-Fe superalloy

nr katalogowy: 79708

The behaviour of metals and alloys during hot plastic working has a complex nature and it varies with the changing of such process parameters as [1÷3]: deformation degree, strain rate and temperature. The high-temperature plastic deformation is coupled with dynamic recovery and recrystallization processes which have influence on the structure and properties of alloys. One of crucial issues is finding the relationship between the hot plastic deformation plastic parameters, microstructure and properties. Since the sixties of the last century, theoretical and experimental investigations have been carried out to find those interdependence for steels and nickel alloys. The Ni-Fe superalloys precipitation hardened by intermetallic phase of γ" (Ni3Nb) type are one of the groups of construction materials intended for operation in cryogenic and elevated temperatures. These alloys are difficult to deform and are characterized by high values of yield stress at a high temperature. High deformation resistance of Ni-Fe alloys is caused by a complex phase composition, high activation energy of the hot plastic deformation process and a low rate of dynamic recrystallization. When choosing the conditions for hot plastic working of Ni-Fe alloys, the following factors should be considered [4÷6]: the matrix grain size, plastic deformation parameters and the course of the recrystallization process. The grain size is of particular importance. Grain refining leads to an increased rate of recovery and dynamic recrystallization and to a smaller diameter of recrystallized grains. This is important, for the grain refinement in Ni-Fe superalloys which have an advantageous influence on increasing their yield point and fatigue strength [7, 8]. In the presented study, research has been undertaken into the influence of the initial microstructure and the parameters of hot plastic working on deformability and grain size in a Ni-Fe superalloy. It is assume[...]

Jeśli masz wykupiony/przyznany dostęp - zaloguj się. Skorzystaj z naszych propozycji zakupu!

Publikacja


e-Publikacja (format pdf) - nr 79708 "A quantitative descriptio..." licencja: Osobista Produkt cyfrowy	10.00 zł

Zeszyt


INŻYNIERIA MATERIAŁOWA - e-zeszyt (pdf) 2013-4 licencja: Osobista Produkt cyfrowy	65.00 zł

Prenumerata

INŻYNIERIA MATERIAŁOWA - prenumerata cyfrowa
licencja: Osobista

Produkt cyfrowy
Nowość

402.00 zł

INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna + wysyłka
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna	492.00 zł brutto 455.56 zł netto 36.44 zł VAT (stawka VAT 8%)
INŻYNIERIA MATERIAŁOWA - pakowanie i wysyłka	21.00 zł brutto 17.07 zł netto 3.93 zł VAT (stawka VAT 23%)

513.00 zł

INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS (Prenumerata papierowa + dostęp do portalu sigma-not.pl + e-prenumerata)	600.00 zł brutto 555.56 zł netto 44.44 zł VAT (stawka VAT 8%)

600.00 zł

Zeszyt

2013-4

Twój Koszyk

Publikacja

Zeszyt

Prenumerata

Zeszyt

Czasopisma