摘要
给出了不同靶温下的Ti注入H13钢的抗磨损特性,并研究了不同靶温对强化机理的影响。注入时靶温为液氮冷却、150和400℃,注入能量和注量分别为180keV和3×10^(17)cm^(-2)。不同靶温下注入后,样品表面硬度不同。但均比未注入样品硬度有明显提高。抗磨损能力也有提高,从液氮靶温注入的1.75倍,150℃靶温的7.7倍到400℃靶温的11.2倍。硬度和抗磨损能力的提高程度取决于不同靶温下注入H13钢表面强化机理的差异。低温注入以位错强化和超过饱和强化为主,150和400℃注入TiC,Fe_2Ti等析出相明显增多,它们以析出相的弥散质点强化为主。
The wear characteristics of Ti-implauted H13 steel at different temperatures are obtained and the effect of the target temperatures for strengthening mechanisms are studied. The different target temperatures are used at LN_2, 150(when R. T implanting) and 400℃ with the same implanting energy(180keV)and dose(3x10^(17)cm^(-2)). Implanted H13 at different temperature get different hardness, all of them increase obviously. The wear resistance also increased as 1. 75 for LN_2, 7. 7 for 150℃and 11. 2 for 400℃. The increase of hardness and wear resistance corresponds to the difference of the strengthening mechanism for different temperatures. At low temperature, the dislocation and ultrasaturation strengthening mechanisms play a important role. At 150 and 400℃, the precipitants TiC and Fe_2Ti form and increase, which produce disperssion strengthening obviously.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1991年第4期403-408,共6页
Journal of Beijing Normal University(Natural Science)
基金
国家"八六三计划"资助项目
关键词
离子注入
H13钢
钛
温度
抗磨性
Ti implantation
H13 steel
target temperature effect
wear resistance mechanism
