Rosette fracture of modified 9Cr–1Mo steel in tension

Verma, Preeti; Rao, G. Sudhakar; Srinivas, N.C. Santhi; Singh, Vakil

doi:10.1016/j.msea.2016.12.011

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…1, where the geometric configuration of the tested specimens is schematically depicted. All bolts were M16 Grade A4-80 in 18 mm clearance holes and were hand tightened, as previous studies [19,29] revealed that bolt preloading only affects stiffness and leaves strength unaffected. Given that all stainless steel grades have similar Young's moduli, the stiffness of the ferritic T-stubs is not expected to differ from that of T-stubs in other stainless steel or carbon steel grades.…”

Section: Geometric Configurationsmentioning

confidence: 99%

Behaviour of Ferritic Stainless Steel Bolted T‐stubs Under Tension‐Part 1: Experimental Investigations

Yapici¹,

Theofanous

Dirar

et al. 2021

ce papers

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Research on stainless steel structures has primarily focused on the structural response and design of individual members, whilst the response of joints has received far less attention to date. Recently, a series of experimental tests has been conducted on austenitic and duplex stainless steel moment resisting connections which highlighted both the excellent ductility and significant overstrength exhibited by such connections as well as the severe conservatism of current design rules specified in EN 1993‐1‐8 when applied to stainless steel joints. A comprehensive experimental study on the structural behaviour of stainless steel T‐stubs fabricated from EN 1.4003 ferritic stainless steel grade is reported in this paper. The tested configurations included both single and double bolt rows and have been assembled with A4‐80 stainless steel bolts. In order to determine the material characteristics of the T‐stubs and the connecting bolts, tensile coupon tests were performed and the material anisotropy exhibited by ferritic stainless steel has been quantified. The ultimate resistance, plastic deformation capacity and failure mode of each T‐stub were obtained and are reported herein. The obtained results are utilised to assess the accuracy of existing design rules and to validate the numerical model discussed in the companion paper.

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Section: Geometric Configurationsmentioning

confidence: 99%

Behaviour of Ferritic Stainless Steel Bolted T‐stubs Under Tension‐Part 1: Experimental Investigations

Yapici¹,

Theofanous

Dirar

et al. 2021

ce papers

View full text Add to dashboard Cite

show abstract

“…This distinct longitudinal crack, also called longitudinal splitting or delamination fracture has been often observed in thick tensile specimens [38,39]. Its formation is attributed to the increased constraint and accompanying increased out of plane stresses observed in thicker specimens which precipitate growth and coalescence of voids to cause delaminations which alleviate the out-of-plane stresses prior to the formation of the main crack [38,39]. It should be noted that no longitudinal splitting was observed in tests on hotrolled austenitic [19,20,40] and duplex [19] stainless steel tensile coupons with thicknesses up to 12 mm thus revealing the different fracture characteristics of ferritic stainless steels.…”

Section: Fig 3 Stress-strain Respone Of the Tested Tensile Couponsmentioning

confidence: 89%

“…4a. This distinct longitudinal crack, also called longitudinal splitting or delamination fracture has been often observed in thick tensile specimens [38,39]. Its formation is attributed to the increased constraint and accompanying increased out of plane stresses observed in thicker specimens which precipitate growth and coalescence of voids to cause delaminations which alleviate the out-of-plane stresses prior to the formation of the main crack [38,39].…”

Section: Fig 3 Stress-strain Respone Of the Tested Tensile Couponsmentioning

confidence: 96%

Experimental study of ferritic stainless steel bolted T-stubs under monotonic loading

Yapici

Theofanous

Yuan

et al. 2021

Journal of Constructional Steel Research

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Microstructural Characteristics and Mechanical Properties of Low-Alloy, Medium-Carbon Steels After Multiple Tempering

Abbasi

Luo

Owens³

2018

Acta Metall. Sin. (Engl. Lett.)

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The microstructure and mechanical properties of NiCrMoV-and NiCrSi-alloyed medium-carbon steels were investigated after multiple tempering. After austenitising, the steels were hardened by oil quenching and subsequently double or triple tempered at temperatures from 250 to 500 °C. The samples were characterised using scanning electron microscopy and X-ray diffraction, while the mechanical properties were evaluated by Vickers hardness testing, V-notched Charpy impact testing and tensile testing. The results showed that the retained austenite was stable up to 400 °C and the applied multiple tempering below this temperature did not lead to a complete decomposition of retained austenite in both steels. It was also found that the microstructure, hardness and impact toughness varied mainly as a function of tempering temperature, regardless of the number of tempering stages. Moreover, the impact toughness of NiCrMoV steel was rather similar after single/triple tempering at different temperatures, while NiCrSi steel exhibited tempered martensite embrittlement after single/double tempering at 400 °C. The observed difference was mainly attributed to the effect of precipitation behaviour due to the effect of alloying additions in the studied steels.

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Rosette fracture of modified 9Cr–1Mo steel in tension

Cited by 6 publications

References 25 publications

Behaviour of Ferritic Stainless Steel Bolted T‐stubs Under Tension‐Part 1: Experimental Investigations

Behaviour of Ferritic Stainless Steel Bolted T‐stubs Under Tension‐Part 1: Experimental Investigations

Experimental study of ferritic stainless steel bolted T-stubs under monotonic loading

Microstructural Characteristics and Mechanical Properties of Low-Alloy, Medium-Carbon Steels After Multiple Tempering

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