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| AN INVESTIGATION OF CERTAIN INTERGRANULAR CRACKS IN THE CORE OF A 20Cr2Ni4A STEEL BILLET |
| Tian Ji-feng Liu Xing-zhi and Wei Kun |
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Cite this article:
Tian Ji-feng Liu Xing-zhi and Wei Kun. AN INVESTIGATION OF CERTAIN INTERGRANULAR CRACKS IN THE CORE OF A 20Cr2Ni4A STEEL BILLET. Acta Metall Sin, 1978, 14(2): 171-252.
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Abstract An investigation has been carried out on the so-called intergranular cracks appearing in the central part of a macroetched transverse section of a 20Cr2Ni4A steel billet. It is shown that this in fact was a kind of acid-etching phenomenon, due to low-melting inclusions at the interdendritic boundaries appearing as cracks. The above observation was further substantiated in laboratory ingots by the introduction of certain low-melting inclusions into experimental melts.
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Received: 18 February 1978
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[1] “晶间裂纹”三结合研究小组,金属学报,10(1974) ,41．
[2] 金属研究昕,大连钢厂联合研究组,金属学报,14(1978) .
[3] Sims, C. E., Trans. AIME, 215 (1959) , 367． |
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