【摘要】：經(jīng)成分優(yōu)化獲得一種新型的貝氏體軸承鋼GCr15SiMoAl,通過鹽浴等溫淬火不同時(shí)間及油淬工藝獲得不同的組織,利用Gleeble3500研究了試驗(yàn)用鋼充氫前后的壓縮變形行為,并與常規(guī)的GCr15軸承鋼進(jìn)行了對(duì)比。結(jié)果表明,GCr15SiMoAl軸承鋼經(jīng)0.5h等溫獲得了貝氏體鐵素體、殘留奧氏體及馬氏體的復(fù)合組織,其綜合壓縮性能最好;隨著鹽浴等溫時(shí)間的延長,抗壓強(qiáng)度逐漸降低,相對(duì)壓縮率先升高后降低。且GCr15SiMoAl軸承鋼在所有工藝下獲得的性能均優(yōu)于傳統(tǒng)的GCr15軸承鋼。氫對(duì)軸承鋼的抗壓強(qiáng)度影響較小,但是由于氫會(huì)促進(jìn)殘留奧氏體發(fā)生應(yīng)變誘發(fā)馬氏體轉(zhuǎn)變,嚴(yán)重降低了軸承鋼的塑性。
[Abstract]:A new type of bainitic bearing steel GCr15SiMoAl, was obtained by optimizing its composition. Different structures were obtained by salt bath isothermal quenching at different time and oil quenching process. The compressive deformation behavior of experimental steel before and after hydrogen filling was studied by Gleeble3500. And compared with conventional GCr15 bearing steel. The results show that the bainite ferrite, retained austenite and martensite composite structure are obtained by isothermal isotherm of GCr15SiMoAl bearing steel for 0.5 h, and its comprehensive compression properties are the best. With the prolongation of the isothermal time of salt bath, the compressive strength decreases gradually, and the relative compression increases first and then decreases. The performance of GCr15SiMoAl bearing steel is better than that of traditional GCr15 bearing steel. Hydrogen has little effect on the compressive strength of bearing steel, but the plasticity of bearing steel is seriously reduced because hydrogen can promote the strain induced martensite transformation of residual austenite.
【作者單位】： 燕山大學(xué)亞穩(wěn)材料制備技術(shù)與科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;洛陽LYC軸承有限公司;
【基金】：國家高技術(shù)研究發(fā)展計(jì)劃資助項(xiàng)目(“863”計(jì)劃,2012AA03A504) 河北省高等學(xué)校科學(xué)技術(shù)研究項(xiàng)目(QN2015100) 燕山大學(xué)青年教師自主研究計(jì)劃項(xiàng)目(15LGB006)
【分類號(hào)】：TG142.1;TG161
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本文編號(hào)：2380382