scholarly journals Strength and Ductility Related with Structure of Dual Phase High Strength Steel Sheet

1982 ◽  
Vol 68 (9) ◽  
pp. 1147-1158 ◽  
Author(s):  
Yo TOMOTA ◽  
Imao TAMURA
Keyword(s):  
High Strength Steel ◽  
Steel Sheet ◽  
High Strength ◽  
Dual Phase ◽  
Strength And Ductility

USS DUAL PHASE 80

Alloy Digest ◽  
1978 ◽  
Vol 27 (12) ◽  
Keyword(s):  
United States ◽  
Corrosion Resistance ◽  
Yield Strength ◽  
Work Hardening ◽  
Steel Sheet ◽  
High Strength ◽  
Heat Treating ◽  
Dual Phase ◽  
United States Steel Corporation ◽  
Heavy Construction

Abstract USS Dual Phase 80 is a high-strength steel sheet which has a dual phase structure of martensite and ferrite. It provides all the benefits of higher strength with little sacrifice in ductility, formability or weldability. Dual Phase 80 gains strength as it is formed through rapid work hardening of its unique microstructure; in fact, it increases from its delivered yield strength of 50,000 psi up to 80,000 psi (or more) in forming. Its final strength depends on the amount of forming. Its many applications include automotive vehicles, farm equipment and heavy construction equipment. This datasheet provides information on composition, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-352. Producer or source: United States Steel Corporation.

Modeling of Anisotropic Plastic Behavior of Advanced High Strength Steel Sheet TRIP 780

2011 ◽  
Vol 410 ◽  
pp. 232-235 ◽  
Author(s):  
Sansot Panich ◽  
Vitoon Uthaisangsuk ◽  
Surasak Suranuntchai ◽  
Suwat Jirathearanat
Keyword(s):  
High Strength Steel ◽  
Steel Sheet ◽  
Plastic Anisotropy ◽  
High Strength ◽  
Uniaxial Tensile ◽  
Plastic Behavior ◽  
Biaxial Test ◽  
Advanced High Strength Steel ◽  
Yield Criteria ◽  
Anisotropic Plastic

Anisotropic plastic behavior of advanced high strength steel sheet of grade TRIP780 (Transformation Induced Plasticity) was investigated using three different yield functions, namely, the von Mises’s isotropic, Hill’s anisotropic (Hill’48), and Barlat’s anisotropic (Yld2000-2d) criterion. Uniaxial tensile and balanced biaxial test were conducted for the examined steel in order to characterize flow behavior and plastic anisotropy for different stress states. Especially, disk compression test was performed for obtaining balanced r-value. All these data were used to determine the anisotropic coefficients. As a result, yield stresses and r-values for different directions were calculated according to these yield criteria. The results were compared with experimental data. To verify the modelling accuracy, tensile tests of various notched samples were carried out and stress-strain distributions in the critical area were characterized. By this manner, the effect of stress triaxiality due to different notched shapes on the strain localization calculated by the investigated yield criteria could be studied.

Flipping Carbon Nanotubes to Continuously Produce Strong, Transparent, Multifunctional Sheets

2005 ◽  
Author(s):  
Mei Zhang ◽  
Shaoli Fang ◽  
Anvar A. Zakhidov ◽  
Sergey B. Lee ◽  
Ali E. Aliev ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
High Strength Steel ◽  
Steel Sheet ◽  
High Strength ◽  
Nanotube Arrays

We demonstrate carbon nanotube assembly by cooperatively rotating carbon nanotubes in vertically-oriented nanotube arrays (forests) and make 5-centimeter-wide, meter-long transparent sheets. These self-supporting nanotube sheets are initially formed as a highly anisotropic electronically conducting aerogel that can be densified into strong sheets that are as thin as 50 nanometers. The measured gravimetric strength of orthogonally oriented sheet arrays exceeds that of high strength steel sheet.

scholarly journals Development of Novel Lightweight Dual-Phase Al-Ti-Cr-Mn-V Medium-Entropy Alloys with High Strength and Ductility

Entropy ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 74
Author(s):  
Yu-Chin Liao ◽  
Po-Sung Chen ◽  
Chao-Hsiu Li ◽  
Pei-Hua Tsai ◽  
Jason Jang ◽  
...  
Keyword(s):  
Compression Strength ◽  
High Strength ◽  
Alloy System ◽  
Dual Phase ◽  
Face Centered Cubic ◽  
Compression Tests ◽  
Arc Melting ◽  
Face Centered ◽  
Fcc Phase ◽  
Strength And Ductility

A novel lightweight Al-Ti-Cr-Mn-V medium-entropy alloy (MEA) system was developed using a nonequiatiomic approach and alloys were produced through arc melting and drop casting. These alloys comprised a body-centered cubic (BCC) and face-centered cubic (FCC) dual phase with a density of approximately 4.5 g/cm3. However, the fraction of the BCC phase and morphology of the FCC phase can be controlled by incorporating other elements. The results of compression tests indicated that these Al-Ti-Cr-Mn-V alloys exhibited a prominent compression strength (~1940 MPa) and ductility (~30%). Moreover, homogenized samples maintained a high compression strength of 1900 MPa and similar ductility (30%). Due to the high specific compressive strength (0.433 GPa·g/cm3) and excellent combination of strength and ductility, the cast lightweight Al-Ti-Cr-Mn-V MEAs are a promising alloy system for application in transportation and energy industries.

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