at fastener holes in a high strength steel. 30CrMnSiNi2A, before and after a cold-expansion process. The fatigue life ofcoldworked specimens was signitkantly increased compared to non-wldworkedones and increased the !O\ver applied stress level. From a study'nf the residual stress distribution near the edgc of the hole. it \vas found
for high-alloyed FeCrMoVC Hyeongjin Park, Dongsung Park, Joong-Hwan Jun et al.-Precipitation hardening behaviour of Al-Mg-Si alloy processed by cryorolling and room temperature rolling Maruff Hussain, P Nageswara rao, Dharmendra Singh et al.-Microstructural, mechanical and tribological investigation of 30CrMnSiNi2A ultra-high strength steel Ballistic Performance of Laminated Functionally Graded high-strength steel The damage image of the target composed of TiB2-based ceramic was showed in Fig. 8, the target was perforated in the presence of twice impact, and the crater of the depth 1.4 mm remained in the back plate of quenched 30CrMnSiNi2A high-strength steel, as shown in
material:hard aluminum alloy LY12CZ, high strength aluminum alloy LC4CS and high strength steel 30CrMnSiNi2A. Each material is machined into three types of specimen:type(I) plain-plate without hole, type(II) central-hole-plate(CH) and type(III)cold-expansion-hole-plate(ECH)(Fig.1).The holes for LY12CZ specimens are filled with over sized Hook CiteSeerX Comparative Evaluations on Stress Corrosion CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda):The stress corrosion cracking (SCC) mechanism of low alloy ultra-high strength steels 30CrMnSiNi2A and 40CrNi2Si2MoVA in neutral 3.5wt % NaCl solution is investigated by slow strain rate technique (SSRT), surface analysis technique and electrochemical measurements. At anodic polarization, 30CrMnSiNi2A shows excellent
Jul 01, 2017 · And the strain rate in high speed cutting process can be achieved to 105 s1. 30CrMnSiNi2A steel is a kind of important high-strength low-alloy structural steel with wide application range. Obtaining the dynamic mechanical properties of 30CrMnSiNi2A under the conditions of high strain rate and high temperature is necessary to construct the constitutive relation model for high speed Journal of Chinese Society for Corrosion and protectionThe post-plating embri ttlement of Cd-Ti coated high strength steel 30CrMnSiNi2A in 3.5% NaCl solution has been studied. Notched specimens are used for tests. The stress vs time to fracture curves under potentiostatic polarization, the potentiodynamic cathodic polarization curve and the electrochemical hydrogen permeability have been measured
Jan 13, 2020 · The demand for medium carbon low alloy steels is progressively increasing in automotive, aerospace, defense, and other industries. The reason behind this is their superior mechanical properties, excellent fracture toughness, and high fatigue resistance and wear resistance .These properties are attributed to the lath ' and retained phases in their microstructure developed by the Microstructural, mechanical and tribological investigation Oct 15, 2019 · 3.550°C650°C is the most inuential stage of tempering for 30CrMnSiNi2A steel. During this stage, huge changeinmicrostructural,mechanicalandtribologicalpropertiesoccurred.Asignicantdropof160HV inhardness,494MPaintensilestrengthand600MPainyieldstrengthwhileremarkableincrementof
Dec 01, 2020 · 1045 carbon steel and 30CrMnSiNi2A high-strength low-alloy (HSLA) steel were joined successfully using inertia friction welding. The effects of the rotational speed on the microstructure and mechanical properties of the joints were investigated. With increasing rotational speed, the tensile strength first increased and then decreased. Study on the Spraying Technique of Ultra-High Strength The ultra-high strength is the pivotal structural material in aviation. The oxy-acetylene flame spraying method that is used to mend aeronautic parts made by ultra-high strength steel is studied in this article. The spraying technology of ultra-high strength parts made by 30CrMnSiNi2A steel is introduced.
Oct 01, 2020 · In the present study, it was the first time to systematically investigate the surface characterization of plasma rotating electrode atomized steel powder. China ultra-high strength low alloy steel 30CrMnSiNi2A powder produced by plasma rotating electrode process (PREP) was chosen as the model material. X-ray photoelectron spectroscopy, scanning Torsional Fatigue Life Prediction of 30CrMnSiNi2A Based on In this paper, torsional fatigue failure of 30CrMnSiNi2A steel which exhibited non-Masing behavior was studied under different constant shear strain amplitudes, using thin-walled tubular specimens. The relationship between shear fatigue and the evolution of meso-deformation inhomogeneity and the prediction method of the torsional fatigue life curve were investigated.
Jun 19, 2013 · The ultra-high-strength steel (UHSS) plays an important role in the mechanical industry because of their special performances. The machinability of 30CrMnSiNi2A steel was studied in dry milling with two different coated tools in the present work. This paper introduced that 30CrMnSiNi2A steel was a kind of difficult-to-machine materials.