Tensile and creep behavior of Type 308 CRE stainless steel joining 13-mm Type 304 stainless steel plate
As part of an effort to develop and validate design technology for use in the liquid-metal fast breeder reactor (LMFBR) program, creep and crack growth in weldments are being studied. In one set of experiments the weldments were fabricated by joining 13-mm (1/2-in.) plates of a reference heat of Type 304 stainless steel by manual shielded metal-arc welding (SMAW) using type 308 controlled residual elements (CRE) filler metal. To analyze the behavior of the weldments we gathered uniaxial test data from specimens cut from the weldments. Tensile and creep test were performed on these specimens at 593{sup 0}C. On examination properties in the longitudinal (all weld metal) orientation differed significantly from those in the transverse (composite) orientation; the longitudinal orientation had superior creep-rupture properties. This was partly because the transverse (composite) weldment contained some weaker base metal. A creep law was developed to represent the strain-time behavior of the longitudinal weld metal specimens for times to 36 Ms (10,000 h).
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 711237
- Report Number(s):
- ORNL/TM--6995
- Country of Publication:
- United States
- Language:
- English
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