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独联体雷宾斯克航空工艺研究所对3X2B8φ钢和4X5MφC钢制造的压铸模压制25000～27000次后成形阴模工作表面出现热疲劳裂纹进行了研究.X-射线结构分析结果表明,3X2B8φ钢阴模工作表面残余应力(280～350MPa)比4X5MφC钢阴模(170～230MPa)高0.5～1倍.4X5MφC钢的显微硬度(300～400H)明显低于3X2B8φ钢(550～600H).
The Ryneczki Institute of Aeronautics and Astronautics of the Commonwealth of Independent States on the 3X2B8φ steel and 4X5MφC steel die casting mold 25000 ~ 27000 after forming the negative working surface thermal fatigue cracks were studied.X-ray structure analysis showed that 3X2B8φ steel Yin The working surface residual stress (280 ~ 350MPa) is 0.5 ~ 1 times higher than that of the 4X5MφC steel female die (170 ~ 230MPa) .The microhardness (300-400H) of 4X5MφC steel is obviously lower than that of 3X2B8φ steel (550-600H).