Full Content is available to subscribers

Subscribe/Learn More  >

Research on Forming Temperature of Metastable Austenitic Stainless Steel Head Based on Strain-Induced Martensitic Transformation

[+] Author Affiliations
Qunjie Lu, Jinyang Zheng, Xiao Zhang

Zhejiang University, Hangzhou, China

Paper No. PVP2016-63558, pp. V005T09A005; 10 pages
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 24th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); Electric Power Research Institute (EPRI) Creep Fatigue Workshop
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5041-1
  • Copyright © 2016 by ASME


Formation of strain-induced martensite (SIM) is found in metastable austenitic stainless steel (m-ASS) during cold forming. The presence of SIM may cause reductions in toughness, ductility and corrosion resistance of the m-ASS. Although these mechanical properties can be restored and improved after cold forming by using proper heat treatment, the manufacturing cost rises greatly. However, the cost of warm forming is cheaper and the SIM reduces with forming temperature increasing. Thus, the main purpose of this research is to investigate a suitable forming temperature, at which the strain-induced martensitic transformation (SIM-Tr) of m-ASS head in forming will reduce. Primarily, a series of static tensile tests were conducted based on several batches of S30408 plates. The tests were carried out at different temperatures varying from 20 °C to 180 °C, with the effect of deformation temperature on SIM evaluated. Moreover, according to the stacking fault energy (SFE) calculation method, the m-ASS’s chemical composition was taken into further consideration to investigate its effect on SIM. Eventually, a formula was established that related to SIM and chemical composition for optimizing the forming temperature. The results obtained by this formula were compared to the experimental results of 304 ASS head stamping tests, and satisfactory matching is found for the proposed forming temperatures and the predicted FN values (readings of the Ferritescope measurement, as a representation of the amount of martensite in this study). Additionally, an enhancement of the cryogenic impact properties and a fewer quantity of delta-ferrite in the microstructure are observed when stamping temperature is higher than 90 °C.

Copyright © 2016 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In