论文部分内容阅读
由于晶界硫化物对电渣重熔炮钢室温机械性能的有害影响,所以人们自然怀疑铸锭在热加工过程中时常开裂是否也是由于晶界硫化物的影响,这就是澳国防部国防科技委员会材料研究所开展此项研究的原因。该所的研究证明,大量的晶界硫化物沉淀对低硫低合金电渣重熔炮钢的热塑性没有什么影响。但是,在氧化性条件下长时间加热后,钢在1100℃以下的热塑性显著降低。还不清楚此时热塑性降低的机理和氧化程度与晶界硫化物的关系,需要今后继续研究。
Due to the detrimental effects of grain boundary sulfides on the room-temperature mechanical properties of ESR steel, it is natural to wonder whether the frequent cracking of ingots during thermal processing is also due to the influence of the grain boundary sulfides, which is why the Defense Science and Technology Commission Material Research Institute to carry out this study. The study shows that a large amount of grain boundary sulfide precipitation has no effect on the thermoplasticity of low sulfur low alloy ESR steel. However, the thermoplasticity of steel below 1100 ° C is significantly reduced after prolonged heating under oxidising conditions. It is unclear at this time the mechanism of the thermoplastic reduction and the degree of oxidation and the relationship between the grain boundary sulfide, the need for continued research in the future.