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Research Papers: Materials and Fabrication

Investigation on Impact Energy of S30403 Austenitic Stainless Steel at Different Temperatures

[+] Author and Article Information
Zhiwei Chen

Institute of Mechanical and Electrical
Engineering,
Beijing University of Chemical Technology,
Beijing 100029, China
e-mail: czw@cscbpv.org

Caifu Qian

Institute of Mechanical and Electrical
Engineering,
Beijing University of Chemical Technology,
Beijing 100029, China
e-mail: qiancf@mail.buct.edu.cn

Guoyi Yang

China Standardization Committee on Boilers and
Pressure Vessels,
Beijing 100029, China
e-mail: ygy@cscbpv.org

Xiang Li

Chinese Special Equipment Inspection
and Research Institute,
Beijing 100029, China
e-mail: xiangli@zju.edu.cn

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 10, 2015; final manuscript received December 12, 2015; published online February 5, 2016. Assoc. Editor: Marina Ruggles-Wrenn.

J. Pressure Vessel Technol 138(3), 031402 (Feb 05, 2016) (4 pages) Paper No: PVT-15-1117; doi: 10.1115/1.4032448 History: Received June 10, 2015; Revised December 12, 2015

In this paper, a series of impact tests on S30403 austenitic stainless steel at 20/−196/−269 °C were performed to determine the effects of cryogenic temperatures on the material properties. Both base plate and welded joint including weld and heat-affected zone were tested to obtain the Charpy impact energy KV2 and lateral expansion rate at the cross section. It was found that when the test temperature decreased from 20 °C to −196 °C or −269 °C, both the Charpy impact energy KV2 at the base plate and welded joint decreased drastically. Specifically, the impact energy KV2 decreased by 20% at the base plate and decreased by 54% at the welded joint from 20 °C to −196 °C, but the impact energy of base plate and welded joint did not decrease, even increased when test temperature decreased from −196 °C to −269 °C. Either at 20 °C or −196 °C, the impact energy KV2 with 5 × 10 × 55 mm3 specimens was about 0.53 times that of the 7.5 × 10 × 55 mm3 specimens, much lower than 2/3, the ratio of two specimens’ cross section areas.

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Figures

Grahic Jump Location
Fig. 3

Results of KV2 at different temperatures: (a) specimen no. 400406-002, (b) specimen no. 460671-001, and (c) specimen no. 461033-001

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Fig. 2

Schematic drawing of test specimens: (a) two groups of test specimens, (b)55 × 10 × 7.5 base plate, (c) 55 × 10 × 5 base plate, (d) 55 × 10 × 7.5 welded joint, and (e)55 × 10 × 5 welded joint

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Fig. 1

Test machine of Charpy impact energy

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Fig. 4

Percentage of crystallinity at different temperatures: (a)specimen no. 400406-002, (b) specimen no. 460671-002, and (c) specimen no. 461033-001

Grahic Jump Location
Fig. 5

Lateral expansion at different temperatures: (a)specimen no. 400406-002, (b) specimen no. 460671-001, and (c)specimen no. 461033-001

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