论文部分内容阅读
本文研究在Fe-Ti(重量比4.5%左右)合金中加入W(重量比2.68%和7.41%)所引起的强化作用。着重研完Fe-W-Ti合金在固溶处理后,范性形变(形变量3.5～4%)对时效过程的影响。在600℃时效,Fe-W-Ti合金出现双硬度峰。时效之前的范性形变,可以缩短沉淀相的孕育期;在时效200小时后,形变试样仍比末形变的试样硬度高。沉淀硬化相确定为Fe_2(W,Ti)复合型Laves相。双硬度峰值对应沉淀相粒子较大,第一个硬度峰值在700～1000之间,第二个硬度峰值在1000～2000之间。
In this paper, the strengthening effect caused by the addition of W (2.68% and 7.41% by weight) to Fe-Ti (about 4.5% by weight) alloy was studied. Focusing on the Fe-W-Ti alloy after solution treatment, the normal deformation (deformation 3.5 ~ 4%) on the aging process. Aging at 600 ℃, Fe-W-Ti alloy double hardness peaks appear. The pre-aging deformation can shorten the incubation period of the precipitated phase. After 200 hours of aging, the deformed samples are still harder than the final deformation samples. The precipitation hardening phase was identified as Fe 2 (W, Ti) composite Laves phase. The double hardness peak corresponds to larger precipitated phase particles, the first peak of hardness is between 700 and 1000, and the second peak of hardness is between 1000 and 2000.