Milling time and annealingheattreatment are the main influencing factors for changing powder structure and fining grain.
球磨时间和退火热处理是粉末金相组织变化和晶粒细化的主要影响因素;
2
After annealingheattreatment, the yield strength of the steel plate reduces to the level of Q195 and the plastic performance has greatly been improved.
经退火热处理,钢板屈服强度降低到Q 195水平,塑性性能也有较大改善。
3
The procedures of heattreatment of steel include hardening tempering annealing and case hardening.