The Influence of Chemical Composition and Pre-strain on Impact Toughness Transition Behaviour of 18%Mn-18%Cr-N Austenitic Steels
The Influence of Chemical Composition and Pre-strain on Impact Toughness Transition Behaviour of 18%Mn-18%Cr-N Austenitic Steels
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%20影响%20of%20化学%20成分%20和%20预应变%20on%20冲击%20韧性%20转变%20行为%20of%2018%Mn-18%Cr-N%20奥氏体%20钢
DOI：
10.2355/tetsutohagane1955.78.12_1846
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发表时间：
1992
影响因子：
0.3
通讯作者：
K. Terao
中科院分区：
文献类型：
--
作者：
J. Ishizaka;Katsutoshi Orita;K. Terao
18%Mn-18%Cr-N钢的冲击吸收能转变行为是众所周知的。低温冲击试样的断口上存在解理状穿晶小面。当试样断口上出现解理小面时，冲击吸收能量降低。提高镍含量、降低氮含量或高温预应变使材料的韧脆转变温度向低温方向移动。本文研究了冲击试样裂尖的类解理断裂与塑性变形结构的关系。
Synopsis : Transition behaviour of impact absorbed energy is well known for 18%Mn-18%Cr-N steel. The cleavage-like transgranular facets are detected on fracture surface of impact specimens tested at low temperature. Impact absorbed energy decrease when these cleavage-like facets are found on fracture surface of test specimen. The ductile-brittle transition temperature of the materials shifted to lower temperature by increased of nickel content, decrease of nitrogen content or pre-straining at high temperature. The relationship between cleavage-like fracture and plastic deformation stracture at the crack tip of impact test specimen has been investigated.