scholarly journals Analysis of Impact Factors on Crash Performance of High Strength 6082 Alloys Consider Extrudability and Small Modifications of the Profile Geometry

2019 ◽  
Vol 10 ◽  
pp. 193-200
Author(s):  
A. Schiffl ◽  
I. Schiffl ◽  
M. Hartmann ◽  
S. Brötz ◽  
J. Österreicher ◽  
...  
Keyword(s):  
High Strength ◽  
Impact Factors ◽  
Crash Performance

Springback Experimental Research of Advanced High-Strength Steel

2013 ◽  
Vol 842 ◽  
pp. 284-288
Author(s):  
Jun Yi Ke ◽  
Yu Qi Liu ◽  
Gui Li ◽  
Ting Du
Keyword(s):  
Yield Stress ◽  
Experimental Research ◽  
High Strength Steel ◽  
High Strength ◽  
Holding Time ◽  
Impact Factors ◽  
Advanced High Strength Steel ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Springback Angle

Springback is one of the major problems of high strength steel.Based on the NUMISHEET’96 S_Rail standard examination questions,using the characteristics of the servo press 200T,the blank holder force,different pressure holding time and the holding times of advanced high strength steel DP280-440, DP340-590, DP400-780 are studied. By changing one of the three impact factors ,three group experiments are carried out.The experimental results show that the springback can change evidently with the increasing of the blank holder force and the holding times,but the holding time has little influence on the springback.What’s more,the springback angle of DP400-780 is the biggest ,proving the higher the yield stress,the bigger the springback angle.Therefore, in the stamping of advanced high strength steel, increasing the blank holder force and holding times are effective methods to solve the springback.

Finite Element Analysis on Impact Factors of Castellated Steel Reinforced High Strength Concrete Beams

2015 ◽  
Vol 744-746 ◽  
pp. 141-147
Author(s):  
Er Cong Meng ◽  
Wen Xiang Zeng ◽  
Xiu Li Qiu ◽  
Yi Sheng Su
Keyword(s):  
Finite Element ◽  
Ultimate Strength ◽  
High Strength Concrete ◽  
High Strength ◽  
Concrete Cover ◽  
Impact Factors ◽  
Element Analysis ◽  
Strength Concrete ◽  
Strength Grade ◽  
Steel Strength

In order to verify the feasibility of ABAQUS, finite element simulation analysis is used to a castellated steel reinforced high strength concrete beam (CSRHSC beam) firstly. Then we consider the strength of steel, strength grade of concrete and thickness of steel protective layer as parameters to study the mechanical properties of the beam by ABAQUS. The results show that: The bearing capacity of beam increases when the steel strength improves, but the magnitude of increase will gradually reduce with the increase of steel strength. Along with the strength grade of concrete increase, the yield strength and ultimate strength basically tend to linear increasing, the ductility tend to decreasing. With the increase of thickness of concrete cover, the ductility of the beam improves but the ultimate strength decreases.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

The Nature of Delta Phase Precipitation in Inconel 718

1982 ◽  
Vol 40 ◽  
pp. 724-725
Author(s):  
L. S. Lin ◽  
C. C. Law
Keyword(s):  
Inconel 718 ◽  
Base Alloy ◽  
High Strength ◽  
Physical Metallurgy ◽  
Nickel Base Alloy ◽  
Phase Precipitation ◽  
Weight Percentage ◽  
Delta Phase ◽  
The Subject ◽  
Nickel Base

Inconel 718, a precipitation hardenable nickel-base alloy, is a versatile high strength, weldable wrought alloy that is used in the gas turbine industry for components operated at temperatures up to about 1300°F. The nominal chemical composition is 0.6A1-0.9Ti-19.OCr-18.0Fe-3Mo-5.2(Cb + Ta)- 0.1C with the balance Ni (in weight percentage). The physical metallurgy of IN 718 has been the subject of a number of investigations and it is now established that hardening is due, primarily, to the formation of metastable, disc-shaped γ" an ordered body-centered tetragonal structure (DO2 2 type superlattice).

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