基于Deform的Cr20Ni80合金锻造过程的裂纹成因分析

Cracks analysis of Cr20Ni80 alloy forging process based on Deform

摘要:

为了分析Cr20Ni80电热合金锻造开裂的因素,利用 Deform 软件对其锻造过程进行数值模拟,并根据应力应变分析其产生裂纹的影响因素.结果表明,随着时间的推移,Cr20Ni80合金的温度逐渐降低,锻造应力逐渐增大;Cr20Ni80合金在1200 ℃等温条件下锻造时,其应力最大值远低于其抗拉强度650 MPa,可以得到高质量锻件.为了避免微裂纹的产生,Cr20Ni80合金的锻造温度应为910~1200 ℃.

Abstract:

To analyze the factors of forging cracks,the forging process of Cr2 0 Ni8 0 electrothermal alloy was numerically simulated by Deform software and the influencing factors of cracks were analyzed according to stress and strain.The results show that with the passage of time,the temperature of Cr20Ni80 alloy gradually decreases,and the forging stress increases gradually.In addition,when the Cr20Ni80 alloy is forged at 1200 centigrade,the maximum stress is much lower than the tensile strength (650 MPa),and the high quality forgings can be obtained.In order to avoid the generation of microcracks, the forging temperature should be between 910 ℃ and 1200 ℃.