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Effects of Defects at Bottom of Notch of Specimen on Impact Property of J55 Casing Pipe
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Fei Zhan1, 2, Li-ping Zhao1, Xiao-xia Shi3
Rare Earth Steel | 2019, 45(1) : 73 - 76
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Rare Earth Steel | 2019, 45(1): 73-76
• Quality of Variety and Experiment and Research •
Effects of Defects at Bottom of Notch of Specimen on Impact Property of J55 Casing Pipe
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Fei Zhan1, 2, Li-ping Zhao1, Xiao-xia Shi3
Affiliations
  • 1.Graduate School of Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 3.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2019-02-25 doi: 10.13647/j.cnki.btgkj.2019.01.018
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In the paper, it is found out that the defects at bottom of notch of impact specimen caused by improper processing lead to the test force forms stress concentration again at bottom of notch of specimen in the impact test through analyzing the reasons for the abnormal test results of impact property for J55 casing pipe of Baotou Steel. The normal stress at the notch of impact specimen exceeds the cohesion strength of material before the specimen deforms so that the specimen is easy to tend to brittle rupture and the impact energy of material is decreased in the actual detection.

impact property  /  defect  /  J55  /  casing pipe
詹飞, 赵丽萍, 石晓霞. 试样缺口底部缺陷对J55套管冲击性能的影响. 包钢科技, 2019 , 45 (1) : 73 -76 . DOI: 10.13647/j.cnki.btgkj.2019.01.018
Fei Zhan, Li-ping Zhao, Xiao-xia Shi. Effects of Defects at Bottom of Notch of Specimen on Impact Property of J55 Casing Pipe[J]. Science & Technology of Baotou Steel, 2019 , 45 (1) : 73 -76 . DOI: 10.13647/j.cnki.btgkj.2019.01.018
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Year 2019 volume 45 Issue 1
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Article Info
doi: 10.13647/j.cnki.btgkj.2019.01.018
  • Receive Date：2018-08-28
  • Online Date：2026-10-20
  • Published：2019-02-25
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History
  • Received：2018-08-28
Affiliations
    1.Graduate School of Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China
    2.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    3.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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