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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 11 Issue 1
Feb.  2020
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JIA Lihui, LI Yongliang. Effects of Nb and Ti on the impact toughness of high strength structure steel Q690D[J]. Nonferrous Metals Science and Engineering, 2020, 11(1): 34-38. DOI: 10.13264/j.cnki.ysjskx.2020.01.006
Citation: JIA Lihui, LI Yongliang. Effects of Nb and Ti on the impact toughness of high strength structure steel Q690D[J]. Nonferrous Metals Science and Engineering, 2020, 11(1): 34-38. DOI: 10.13264/j.cnki.ysjskx.2020.01.006
shu

Effects of Nb and Ti on the impact toughness of high strength structure steel Q690D

  • 1.

    Stainless Steel Branch of HBIS Group Tang Steel Company, Tangshan 063016, China

  • 2.

    Technology Center of HBIS Group Tang Steel Company, Tangshan 063016, China

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  • Received Date: September 05, 2019
  • Published Date: February 28, 2020
    Graphical Abstract
    • Abstract
  • The effects of microalloy elements such as Nb and Ti on the impact toughness of high strength structure steel Q690D were studied by using the impact testing machine, optical microscope and scanning electron microscope. The results showed that the impact energy of the steel was reduced due to the second phase particle coarsening and grain mixing, but there were such noticeable changes when Nb and Ti content of the steel were reduced respectively that the impact energy of the steel in the experiment could maintain above 90 J at -20 ℃.
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    • References (21)
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