摘要
为探究高强无间隙原子钢的低温脆性,对不同批次的450 MPa级高强无间隙原子钢进行二次加工脆化试验。结果表明:样杯边部粗糙度越大,材料的二次加工脆化温度越高;适当提高B元素含量,可有效提高材料的抗低温冲击性能,当B元素质量分数为0.001 2%,样杯边部粗糙度为0.3μm时,二次加工脆化温度小于-60℃。
To investigate the low temperature brittleness of high-strength gapless atomic steel,secondary processing embrittlement tests were conducted on different batches of 450 MPa high-strength gapless atomic steel.The results show that the larger the roughness of the sample cup edge,the higher the secondary processing embrittlement temperature of the material.Appropriately increasing the content of B element could effectively improve the low temperature impact resistance of materials.When the mass fraction of B element was 0.001 2% and the roughness of the sample cup edge was 0.3 μm,the secondary processing embrittlement temperature was less than-60 ℃.
作者
冯帆
FENG Fan(Shandong Iron and Steel Group Rizhao Co.,Ltd.,Rizhao 276800,China)
出处
《理化检验（物理分册）》
CAS
2024年第11期6-10,共5页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
高强无间隙原子钢
低温脆性
二次加工脆化温度
粗糙度
B元素
high-strength gapless atomic steel
low temperature brittleness
secondary processing embrittlement temperature
roughness
B element
