正火状态

结果发现在铸态条件，用提高硬度的作用不如铬、铜－铬以及SPI孕育剂，但在正火状态.钼的作用显著，铜－铬与之相当。

The results show that , in the as-cast condition the effect of Mo on the increasing of hardness is not as obvious as that of Cr , Cu-Cr and SPI inoculant ; in the normalized condition , the effects of Mo and Cu-Cr on hardness are all outstanding .

结果发现，正火状态的低碳Mn-V钢的应力应变曲线的Lüders带区的BE大于加工硬化区，并且在Lüders应变区没有永久软化。

The results show that the BE in the luders region is larger than that in the workhardening region on stress-strain curves in the normalized low carbon Mn-V steel , but none of the tension-compression stress strain curves in the luders region exhibits permanent softening .

结果指出：临界区加热前为热锻态组织时，则双相钢的强度比初始组织为正火状态的偏高，延性偏低；

The results indicated that the dual phase steels possessing initial structure of as-forged have a lower ductility but higher strength than dual phase steel possessing initial structure of as-normalized .

球铁曲轴通过这种途径强化后，和一般正火状态的曲轴相比，其弯曲疲劳强度提高45～70%，耐磨性也显著提高。

After being treated by the method mentioned above , the bending fatigue strength of the nodular cast iron crankshaft is increased by 45-70 % in comparison with those in normalized condition . The wearing resistance of the treated crankshaft is improved notably ;

通过试验研究45钢在热轧、正火、调质状态进行盐浴氮化对冲击韧性的影响，分析了阀杆脆断的原因。

By means of experimentation , the paper studies the effects of steel 45 on the impacts toughness under the state of being hot rolled , normalized , hardened and tempered through salt-bath nitriding and analyses the cause of valve stem brittle fracture .