Journal ArticleDOI
Correlation of Yield Strength and Tensile Strength with Hardness for Steels
Erik J. Pavlina,C.J. Van Tyne +1 more
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TLDR
In this paper, the authors used regression analysis to determine the correlation of the yield strength and the tensile strength to the diamond pyramid hardness values for over 150 nonaustenitic, hypoeutectoid steels.Abstract:
Hardness values as well as yield and tensile strength values were compiled for over 150 nonaustenitic, hypoeutectoid steels having a wide range of compositions and a variety of microstructures. The microstructures include ferrite, pearlite, martensite, bainite, and complex multiphase structures. The yield strength of the steels ranged from approximately 300 MPa to over 1700 MPa. Tensile strength varied over the range of 450-2350 MPa. Regression analysis was used to determine the correlation of the yield strength and the tensile strength to the diamond pyramid hardness values for these steels. Both the yield strength and tensile strength of the steels exhibited a linear correlation with the hardness over the entire range of strength values. Empirical relationships are provided that enable the estimation of strength from a bulk hardness measurement. A weak effect of strain-hardening potential on the hardness-yield strength relationship was also observed.read more
Citations
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Structural integrity of Ni-base alloy welds
Hannu Hänninen,Anssi Brederholm,Teemu Sarikka,Roman Mouginot,Petra Holmström,Tapio Saukkonen,Aki Toivonen,Päivi Karjalainen-Roikonen,Pekka Nevasmaa,Heikki Keinänen,Esa Leskelä,Matias Ahonen,Ulla Ehrnstén,Pertti Aaltonen +13 more
TL;DR: The Tekes project Structural integrity of Ni-base alloy welds (SINI) was carried out at Aalto University and VTT during the period from 2010 to 2014 as discussed by the authors.
Journal ArticleDOI
Mechanical properties of constituent phases in structural steels and heat-affected zones investigated by statistical nanoindentation analysis
Thai-Hoan Pham,Ngoc-Vinh Nguyen +1 more
TL;DR: In this article, the influence of the heat during welding on the microstructural phases and their mechanical properties in two types of popular structural steels was investigated, including ferrite and pearlite.
Proceedings ArticleDOI
Micromechanical modelling of self-healing cementitious materials
TL;DR: In this paper, a self-healing model is proposed for concrete composite material, which is based on micro-cracking and other time-dependent phenomena, along with selfhealing experiments and numerical mechanical strength response.
Journal ArticleDOI
Modeling mechanical properties and plastic strain for hot forming-quenching AA6061 aluminum alloy parts
TL;DR: In this paper, an analytical model of mechanical properties and plastic strain for an HFQ-formed 6061 aluminum alloys part was established by curve fitting of experimental data and the mechanical properties were evaluated by tensile and micro-hardness tests, and the plastic strain distribution in the HFQ process was analyzed by an automatic strain measuring system.
Journal ArticleDOI
Failure competition behavior of 9Cr/617 dissimilar welded joint during LCF test at elevated temperature
TL;DR: In this paper, failure competition behavior was found after low cycle fatigue (LCF) tests for the dissimilar welded joint between modified 9Cr steel and nickel-based alloy 617 at 600°C.
References
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The Science of hardness testing and its research applications : based on papers presented at a symposium of the American Society for Metals, October 18 to 20, 1971
J. H. Westbrook,Hans Conrad +1 more
The determination of yield strength from hardness measurements
TL;DR: In this paper, it was shown that the 0.2 pct offset yield strength of a material can be obtained from simple hardness measurements using the expression σ y = (H/3)(0.1) m-2cffff, where H is the Diamond pyramid hardness and m is Meyer's hardness coefficient.
Journal ArticleDOI
Microhardness mapping and the hardness-yield strength relationship in high-pressure diecast magnesium alloy AZ91
Carlos H. Cáceres,J.R. Griffiths,J.R. Griffiths,Amirreza Pakdel,Cameron Davidson,Cameron Davidson +5 more
TL;DR: In this article, microhardness maps of cross-sections of high pressure diecast test bars of AZ91 have been determined, and the mean hardness obtained by integrating the micro hardness maps over the entire cross-section increased with decreasing thickness of the bars, and was found to be in good correlation with each bar's yield strength.
Journal ArticleDOI
On the correlation of mechanical and physical properties of 7075-T6 Al alloy
R. Clark,B. Coughran,I. Traina,A. Hernandez,T. Scheck,C. Etuk,J. Peters,E.W. Lee,J. Ogren,Omar S. Es-Said +9 more
TL;DR: In this paper, the influence of varying the thermal processing parameters on the physical and mechanical properties of 7075 T6 aluminum alloy was studied and an excellent correlation was found between the tensile strength and hardness.
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