charpy v-notch toughness

基本解释

CVN(Charpy V-notch) toughness and grain size number of J55 grade oil casings produced by Baotou Iron and Steel Company did not meet the reiative standards in the past.
本文针对包钢原来生产的J55石油套管冲击韧性不足，晶粒粗大的问题开展研究。
etd.calis.edu.cn
The extra-cryogenic impact toughness and influence factors of the high-Mn austenitic steel are studied by means of the Charpy V-notch impact test and the SEM fractured appearance analysis.
本文通过在超低温下的V型缺口夏比冲击试验和SEM断口分析研究了高锰奥氏体钢的冲击韧性及其影响因素。