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| A PSEUDO-INHERITANCE OF FRACTURE OF ALLOY STRUCTURAL STEEL |
| QI Zhengfeng; REN Ruiming (Dalian Railway Institute) (Manuscript received 15 February; 1985; revised manuscript 23 April; 1986) |
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Cite this article:
QI Zhengfeng; REN Ruiming (Dalian Railway Institute) (Manuscript received 15 February; 1985; revised manuscript 23 April; 1986). A PSEUDO-INHERITANCE OF FRACTURE OF ALLOY STRUCTURAL STEEL. Acta Metall Sin, 1987, 23(2): 158-161.
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Abstract Such inheritance of fracture is a pseudo-inheritance of fracture if the quenching structure, overheated not too seriously, of the alloy structural steel 40CrNi underwent requenching from normal quenching temperature reheating up at medium rate. This coarse grain fracture, showing one of the priorly overheated coarse austenite grain, is, in reality, fine grain fracture along fine equiaxial austenite grain boundary formed on reheating at medium rate. So it is called the pseudo-inheritance of fracture. It seems to be not affected on the impact toughness. The origin of pseudo-inheritance of fracture has been discussed.
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Received: 18 February 1987
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1 戚正风,刘世程.大连铁道学院学报,1983;(1-2) :21
2 Ko T, Hanson D. J Iron Steel Inst 1950; 164: 51
3 赵坚.金属学报,1978;14:316
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