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研究了含钼10%的高速钢(Mo10)能量吸收与应力、压缩次数的关系,对试样压缩前后进行了XRD及SEM检测分析,并对Mo10高速钢中基体及M2C碳化物进行了微米压痕实验。结果表明:Mo10高速钢随应力的增大,吸收的能量值呈二次曲线形式增加,随着压缩次数的增加,试样吸收的能量逐步减少;SEM检测结果表明,应力作用下裂纹容易在基体上产生;微米压痕实验表明随载荷增大基体的硬度增大,产生加工硬化;M2C碳化物在载荷为1 300 mN时会出现加工软化,能贮存更高弹性应变能。
The relationship between the energy absorption and the stress and compression times of high speed steel (Mo10) containing 10% molybdenum was studied. The XRD and SEM analysis of the samples before and after compression were carried out. The substrate and M2C carbides in Mo10 high speed steel Trace experiment. The results show that with the increase of stress, the energy value of Mo10 high-speed steel increases in the form of quadratic curve, and the energy absorbed by the sample gradually decreases with the increase of the number of compressions. SEM results show that the crack is easy to crack in the matrix ; Micro-indentation experiments show that with the load increases the hardness of the matrix increases, resulting in work hardening; M2C carbide in the load of 1 300 mN will appear when processing softening, can store higher elastic strain energy.