Results 111 to 120 of about 2,087 (166)

Preliminary thermomechanical treatment of pipes

Metal Science and Heat Treatment, 1966
1. Thermomechanical treatment combined with cold rolling (PTMT) of pipes made of 30KhGSA steel increases the strength by 30–50 kg/mm2 and the yield point by 20–35 kg/mm2 with tempering at 100–400°C. 2. Neither the size nor the shape of the austenitic grains is the determining factor in hardening the steel by thermomechanical treatment.
N. Dr�gan, M. L. Bernshtein
openaire   +1 more source

Thermomechanical treatment of the VT15 alloy

Metal Science and Heat Treatment, 1965
1. High temperature thermomechanical treatment consisting of hot deformation at 1050°C and quenching in water improves the mechanical properties after aging at 450 and 560°C. 2. Preliminary cold working of the β-solid solution is responsible for its uniform decomposition during aging following high temperature thermomechanical treatment ...
S. G. Glazunov, A. I. Khorev, E. V. Polyak   +2 more
openaire   +1 more source

Anaerobic treatment of hemp thermomechanical pulping wastewater

Water Research, 1998
Abstract Biological treatment is an indispensable instrument for water management of non-wood pulp mills, either as internal measure or end of pipe. In this paper, anaerobic treatment of wastewaters derived from the thermomechanical pulping (TMP) of hemp (Cannabis sativa L.) is described.
Kortekaas, S., Wijngaarde, R., Klomp, J.W., Lettinga, G., Field, J.A.   +4 more
openaire   +2 more sources

Thermomechanical treatment of 2014 aluminium alloy

Materials Science and Technology, 1988
AbstractThe effect of thermomechanical treatment on the flow stress, fracture strain, structure, and precipitation behaviour of commercial grade 2014 aluminium alloy has been investigated. Specimens in the supersaturated and aged conditions were plastically deformed in torsion tests in the temperature range 293–493 k and strain rate range 2·8 ×10−3−2·5
J. Gronostajski, A. Tobota
openaire   +1 more source

Thermomechanical treatment of R18 steel

Metal Science and Heat Treatment, 1968
1. After HTTMT of high-speed steel R18 by the optimum method the bending strength is 440 kg/mm2; after the standard treatment is 250 kg/mm2. 2. Reduction of the deformation temperature leads to impoverishment of the solid solution in carbon and alloying elements, promotes the precipitation and coalescence of carbides, and sharply reduces
V. S. Tomsinskii, V. A. Nekrasov, V. A. Malygin, L. A. Vikhanskii   +3 more
openaire   +1 more source

Thermomechanical treatments of a 1050 pearlite steel

Metallurgical Transactions A, 1983
A study of the microstructures and mechanical properties of thermomechanically treated 1050 steel has been carried out. The materials were first transformed to fine and coarse lamellar pearlite structures. These samples were reduced 75 pct in thickness by cold rolling, then heat treated at 780 °C (up-quenching) or 650 °C (annealing) for different ...
L. J. Chen, T. W. Wu, H. C. Cheng
openaire   +1 more source

Thermomechanical treatment of titanium alloys

Metal Science and Heat Treatment of Metals, 1962
1. The best results from TMT on alloy VTZ-1 are attained after deformation at 850° with subsequent tempering. 2. The mechanical properties of titanium alloys subjected to TMT, regardless of the operating conditions, are higher than if these alloys are subjected to heat treatment only, without deformation.
openaire   +1 more source

Thermomechanical treatment of boring chisels

Metal Science and Heat Treatment, 1966
1. Thermomechanical treatment increases the working life of chisels by 20–30% in cutting quenched steel. 2. The optimum deformation temperature of the head of the chisel is 500° C. Cooling below 500°C decreases the ductility of the metal and leads to the formation of cracks during deformation. 3.
openaire   +1 more source

Production of isotropic materials by thermomechanical treatment

Soviet Materials Science, 1968
The general principles of thermomechanical treatment for ensuring isotropy of mechanical properties are discussed. The deformation conditions of isotropy are formulated, and an expression is derived for estimating the intensity of plastic deformation during the treatment which may consist of several cycles.
O. N. Romaniv, B. V. Kozak
openaire   +1 more source

Effect of thermomechanical treatment on fine structure

Metal Science and Heat Treatment, 1963
1. Thermomechanical treatment improves the mechanical characteristics because of a) decrease of the size of grains of the original γ-phase in steel and the grains of the β-phase in titanium alloys as well as the size of the martensite platelets; b) the change in the ratio of the phase components (for average values of plastic deformation the ...
A. P. Gulyaev, A. S. Shigarev
openaire   +1 more source