1) secondary hardening at low temperature
低温二次硬化
1.
The technical principle of reaching ultra-hardness by secondary hardening at low temperature for organic matter cutting tool steel 9CrV has been studied in detail.
深入分析了有机物切割刀具用钢9CrV通过低温二次硬化实现超硬化的技术原理,采用特殊热处理工艺,在低温回火时直接析出大量微细的合金渗碳体,通过高碳马氏体强化叠加微细弥散合金渗碳体的沉淀强化可显著提高钢的硬度实现超硬化,合金渗碳体的尺寸细化到50 nm左右,由此使钢的热处理硬度达到HRC 68~72。
2) low-temperature stiffening,low-temperature stiggening
低温硬化
3) secondary hardening
二次硬化
1.
Advance in Research of Tempering Secondary Hardening of Alloy Tool and Die Steel Fe-M-C Quenched Martensite;
合金工模具钢Fe-M-C淬火马氏体回火的二次硬化研究进展
2.
Studing status on the secondary hardening phenomenon in ultra-high strength steels;
超高强度钢中二次硬化现象研究
3.
Influence of alloying elements on secondary hardening of hot work die steel;
降Nb,V,Ni添加Mn对HD钢二次硬化的影响
4) second hardening
二次硬化
1.
The results show that Nb with high temperature quenching pluses sub-critical tempering can improve both the eutectic carbide distribution and its pattern,and results in the second hardening effect notably.
结果表明:加铌并配合高温淬火-亚临界回火工艺,可改善共晶碳化物的形态和分布,并产生明显的二次硬化。
2.
And the forming of second hardening in the iron has been analyzed.
利用硬度、磁性测定和金相显微等方法 ,研究了淬火及回火温度对 15Cr- 2Mo - 1Cu型高铬铸铁的组织和性能的影响 ,并着重对高铬铸铁二次硬化的形成过程和原因进行了分析研究 。
5) cryohardening
[物]低温硬化
6) secondary hardening steel
二次硬化钢
1.
Effect of austenitizing on microstructures and mechanical properties of 3Cr-3Mo-Nb secondary hardening steel;
奥氏体化对3Cr-3Mo-Nb二次硬化钢的组织和力学性能的影响
2.
The microstructure and mechanical properties of a secondary hardening steel containing 3 % Cr and 3 % Mo in quenched and tempered condition were investigated.
研究了 3 Cr- 3 Mo二次硬化钢淬火回火后的组织和力学性能。
3.
The carbides in the quenched and tempered microstructure of secondary hardening steel with a nominal composition of 25Cr3Mo3NiNb were studied by using TEM and electrochemical extraction methods.
利用TEM和萃取相分析方法,研究了25Cr3Mo3NiNb二次硬化钢淬火回火组织中的碳化物。
补充资料：低温
低温
hypothermia
低温状态下脑组织对缺氧的耐受性明显增加。体温低于37℃时，每减低1℃，脑组织代谢率减少6.7%，颅内压减低5.5%，在人工呼吸、心脏按压的同时或稍后应给予降温处理，可采用正规冬眠疗法使体温降至肛温35℃左右，目前尤为重视头部局部降温，戴冰帽，头温降至32℃左右，重症要降温3～5天。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条