نتایج جستجو برای: cold rolled martensite
تعداد نتایج: 111839 فیلتر نتایج به سال:
This study examines the fatigue and anisotropy behaviour of cold rolled AA1200 aluminium alloy for light weight automotive connecting rod application. Aluminium (Al) 1200 ingots were melted at temperature of 680 0C (after one hour of heating) cast in sand mould and cast samples homogenized for 6 hrs at 480 0C. The cold rolling process was carried out after homogenisation for 10, 20, 30, 40 and ...
Problem statement. Development of an effective technology for the skin-rolling will allow production hot-rolled sheet products with quality indicators that meet requirements standards cold-rolled sheets. Consumers significant economic benefits be able to use relatively inexpensive sheets instead expensive The purpose article: establishment effect various technological schemes hot rolled fine an...
The Interstitial Free (IF) grade steel sheets are used for auto body applications where these sheets require good formability/drawability property. To achieve this property the cold rolled sheets are annealed to obtain desirable texture in the recrystallised grains to avoid material failure during forming operation. The paper deals with an ultrasonic technique to determine the condition of the ...
In the present study, influences of cold rolling and annealing time on fatigue crack propagation behavior AA5052 aluminum alloy were investigated. The sheet was cold-rolled under different reductions, i.e., 0, 15, 30, 45%. 45% as-rolled specimen then annealed at 370°C times, for 2, 4, 6 h. microstructure evolutions after treatments also examined using optical microscopy whereas characterized by...
The objective of this paper is to study the surface texture behavior low and medium-carbon steels machine elements in acidic environment using Abbott Firestone curve depending upon MATLAB software. chemical composition low-carbon steel 0.16C-0.27Si-1.47Mn-0.02Al while 0.49C-0.30Si-0.91Mn-0.03Al. They were hot-rolled at 1200°C for 30 min followed by air cooling. Two different heat treatment proc...
The study reports the mechanical property and microstructure of cold rolled low carbon steel and its work-hardening behavior in the deformation process. The tensile test in room temperature of low carbon steel was implemented for the different cold rolling deformation, the stress-strain curve was draught according to the relationship between strength and deformation and fitted for the polynomia...
Crystallographic reconstruction of parent austenite grain boundaries from the martensitic microstructure in a wear resistant steel was carried out using electron backscattered diffraction (EBSD). The present study mainly aims to investigate the parent austenite grains from the martensitic structure in an as-rolled (reference) steel sample and samples obtained by quenching at different cooling r...
the pseudo-elastic behavior of shape memory alloy (sma) truss and cantilever beam are investigated. brinson’s one-dimensional material model, which uses the twinned and detwinned martensite fractions separately as internal variables, is applied in the algorithm to establish the sma stress-strain characteristics. this material model also incorporates different young’s modulus for austenitic and ...
Abstract Banding in commercial dual-phase steels, such as banded ferrite and pearlite or martensite microstructures, is inherited from segregation during solidification continuously cast material, predominantly Mn segregation, subsequent rolling. The microstructures lead to anisotropic mechanical properties which generally undesirable. This paper presents an alloy design approach (termed “segre...
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