Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV

Martti Vilpas, Hannele Tihekari, Risto Karppi

Research output: Book/ReportReportProfessional

Abstract

The report gives the test results on mechanical properties of shielded metal arc (SMAW) and submerged arc (SAW) welded joints for a normalized steel StE NiV (Re - 500 N/mm2). The welding tests were carried out with Ni-alloyed filler materials (E 8018-Cl for SMAW and S2Ni2 for SAW), using a preheat temperature of 150 °C and arc energies of 17,30 and 50 kJ/cm. The testing procedure comprised conventional hardness, tensile and Charpy-V notch and fracture mechanics tests. The results showed that the weld metal strength and toughness properties were close to the corresponding base material values. Also the measured hardness values (217 to 355 HV5) were fairly low in all the studied cases. The Charpy-V notch transition behaviour of the joints was near that of the base material when the arc energy was reduced to around 17 kJ/cm. An increased arc energy, however, resulted in an impaired transition behaviour in the SAW-joints, especially in the Ni-alloyed weld metal. The fracture toughness (J-integral) test results indicated that the transition behaviour of the SMA-weld metal located at markedly higher temperatures than that of the corresponding SA-welds. The K -transition behaviour of the fusion boundaries did not show any clear differences between the SMAW- and SAW-tests. The most favourable toughness was obtained with SAW by reducing the arc energy below 30 kJ/cm.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages24
ISBN (Print)951-38-2596-5
Publication statusPublished - 1986
MoE publication typeD4 Published development or research report or study

Publication series

NameTutkimuksia / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume407

Fingerprint

Welds
Mechanical properties
Steel
Metals
Toughness
Hardness
Fracture mechanics
Fillers
Fracture toughness
Welding
Fusion reactions
Temperature
Testing

Keywords

  • high strength steels
  • weld toughness
  • ductility
  • welded joints
  • strength
  • fracture mechanics
  • impact tests
  • J-integral
  • cold cracking

Cite this

Vilpas, M., Tihekari, H., & Karppi, R. (1986). Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 407
Vilpas, Martti ; Tihekari, Hannele ; Karppi, Risto. / Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV. Espoo : VTT Technical Research Centre of Finland, 1986. 24 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 407).
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Vilpas, M, Tihekari, H & Karppi, R 1986, Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 407, VTT Technical Research Centre of Finland, Espoo.

Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV. / Vilpas, Martti; Tihekari, Hannele; Karppi, Risto.

Espoo : VTT Technical Research Centre of Finland, 1986. 24 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 407).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV

AU - Vilpas, Martti

AU - Tihekari, Hannele

AU - Karppi, Risto

PY - 1986

Y1 - 1986

N2 - The report gives the test results on mechanical properties of shielded metal arc (SMAW) and submerged arc (SAW) welded joints for a normalized steel StE NiV (Re - 500 N/mm2). The welding tests were carried out with Ni-alloyed filler materials (E 8018-Cl for SMAW and S2Ni2 for SAW), using a preheat temperature of 150 °C and arc energies of 17,30 and 50 kJ/cm. The testing procedure comprised conventional hardness, tensile and Charpy-V notch and fracture mechanics tests. The results showed that the weld metal strength and toughness properties were close to the corresponding base material values. Also the measured hardness values (217 to 355 HV5) were fairly low in all the studied cases. The Charpy-V notch transition behaviour of the joints was near that of the base material when the arc energy was reduced to around 17 kJ/cm. An increased arc energy, however, resulted in an impaired transition behaviour in the SAW-joints, especially in the Ni-alloyed weld metal. The fracture toughness (J-integral) test results indicated that the transition behaviour of the SMA-weld metal located at markedly higher temperatures than that of the corresponding SA-welds. The K -transition behaviour of the fusion boundaries did not show any clear differences between the SMAW- and SAW-tests. The most favourable toughness was obtained with SAW by reducing the arc energy below 30 kJ/cm.

AB - The report gives the test results on mechanical properties of shielded metal arc (SMAW) and submerged arc (SAW) welded joints for a normalized steel StE NiV (Re - 500 N/mm2). The welding tests were carried out with Ni-alloyed filler materials (E 8018-Cl for SMAW and S2Ni2 for SAW), using a preheat temperature of 150 °C and arc energies of 17,30 and 50 kJ/cm. The testing procedure comprised conventional hardness, tensile and Charpy-V notch and fracture mechanics tests. The results showed that the weld metal strength and toughness properties were close to the corresponding base material values. Also the measured hardness values (217 to 355 HV5) were fairly low in all the studied cases. The Charpy-V notch transition behaviour of the joints was near that of the base material when the arc energy was reduced to around 17 kJ/cm. An increased arc energy, however, resulted in an impaired transition behaviour in the SAW-joints, especially in the Ni-alloyed weld metal. The fracture toughness (J-integral) test results indicated that the transition behaviour of the SMA-weld metal located at markedly higher temperatures than that of the corresponding SA-welds. The K -transition behaviour of the fusion boundaries did not show any clear differences between the SMAW- and SAW-tests. The most favourable toughness was obtained with SAW by reducing the arc energy below 30 kJ/cm.

KW - high strength steels

KW - weld toughness

KW - ductility

KW - welded joints

KW - strength

KW - fracture mechanics

KW - impact tests

KW - J-integral

KW - cold cracking

M3 - Report

SN - 951-38-2596-5

T3 - Tutkimuksia / Valtion teknillinen tutkimuskeskus

BT - Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Vilpas M, Tihekari H, Karppi R. Mechanical properties of SMA- and SA-welded joints in normalized steel StE 460 NiV. Espoo: VTT Technical Research Centre of Finland, 1986. 24 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 407).