Zobrazeno 51 - 60
of 327
pro vyhledávání: '"550"'
Autor:
Dieter Isheim, David N. Seidman
Publikováno v:
Metallurgical and Materials Transactions A. 33:2317-2326
The local chemistry and structure of α-iron/molybdenum nitride heterophase interfaces is studied on a subnanometer scale by atom-probe field-ion microscopy (APFIM), three-dimensional atom-probe microscopy (3DAPM) and both conventional transmission e
Publikováno v:
Metallurgical and Materials Transactions A. 33:1949-1962
Fatigue-crack-propagation (FCP) tests were conducted on the powder metallurgy nickel-base superalloy KM4 at temperatures of 20 °C, 550 °C, and 650 °C. Two different heat treatments were investigated, one yielding a relatively coarse grain size of
Autor:
Debalay Chakrabarti, Saurabh Kundu, Arya Chatterjee, Md. Basiruddin Sk, Arijit Lodh, Badirujjaman Syed
Publikováno v:
steel research international. 88:1600286
The reinforcing bars provide necessary structural support for the buildings made with concrete under normal and demanding conditions. The two most structurally demanding situations in building can arise under seismic activities and fire. This paper d
Publikováno v:
Metallurgical and Materials Transactions A. 52:4191-4205
As part of efforts to fabricate FeMnAlC lightweight steels suitable for high-temperature applications, the influence of Nb addition on the microstructure and tensile deformation behaviors has been investigated. Electron backscattered diffraction anal
Publikováno v:
Scripta Materialia. 38:101-106
In the course of development of 12 CrMoV steels nickel was added in order to improve impact properties and to suppress the presence of {delta}-ferrite in the microstructure. It was found, however, that excessive amounts of nickel, greater than {appro
Publikováno v:
Metallurgical and Materials Transactions A. 28:2507-2513
Normal spectral emissivities for solid (ɛλ,solid) and liquid (ɛλ,liquid) copper at the melting point have been determined, and the discontinuity in ɛλ,liquid and ɛλ,solid at the melting point has been discussed. The spectral emissivity was de
Publikováno v:
Metallurgical and Materials Transactions A. 28:1059-1068
A 5083 Al alloy was synthesized using spray deposition processing with N2 as the atomization gas. It was noted that the grains that were present in as-spray-deposited 5083 Al were equiaxed with an average size of 15.2 µm. The matrix of the material
Autor:
M. Nilmani, D. E. Langberg
Publikováno v:
Metallurgical and Materials Transactions B. 27:780-787
Alloys of nickel and zinc are used for the hot dip galvanizing of reactive steels containing around 0.1 pct Si. The production of these alloys is hindered by the low solubility of nickel in molten zinc at normal zinc alloying temperatures (450 °C to
Publikováno v:
Revista de Metalurgia, Vol 32, Iss 2, Pp 83-95 (1996)
Currently, the design development of fusion reactors and the possible materials to use in them are being studied in parallel. One of the most critical problems in this research is the structural material selection for the first wall and blanket. The
Publikováno v:
Metallurgical and Materials Transactions A. 52:3204-3220
The recrystallization behaviors of deformed 6xxx aluminum alloys can be effectively controlled with α-Al(Mn,Cr)Si dispersoids by pinning or slowing the movement of dislocations. However, abnormal grain growth still often occurs due to the nonuniform