【摘要】：對(duì)高鋁304奧氏體不銹鋼進(jìn)行了溫軋固溶處理,利用光學(xué)顯微鏡(OM)、X射線衍射(XRD)、電子探針(EPMA)分別分析合金的表面形貌、相組成及表面成分,并對(duì)其力學(xué)性能進(jìn)行測(cè)試分析。結(jié)果表明,高鋁合金組織中,黑色鐵素體相呈現(xiàn)條狀、短桿狀及部分顆粒狀分布在白色奧氏體基體上,組織分布有方向性;大部分Al元素固溶在基體中,伴有Al N等黑色相析出;隨軋制溫度增加,硬度和耐腐蝕性逐漸升高,伸長(zhǎng)率達(dá)47%左右;高鋁合金變形能力大幅度提高,1%Al(質(zhì)量分?jǐn)?shù),下同)合金的抗拉強(qiáng)度可達(dá)766 MPa;合金的斷口均是由大韌窩(5~15μm)和細(xì)小韌窩(≤5μm)構(gòu)成,不同軋制溫度下合金的斷裂形式相似,都屬韌性斷裂;相同軋制溫度下1.5%Al不銹鋼的耐腐蝕性較好。
[Abstract]:High Al-304 austenitic stainless steel was treated by warm rolling solution. The surface morphology, phase composition and surface composition of the alloy were analyzed by (OM), X ray diffraction (XRD), electron probe (EPMA). The mechanical properties are tested and analyzed. The results show that the black ferrite phase is striped in the high aluminum alloy structure, and the short bar and some granules are distributed on the white austenitic matrix, and the microstructure is directionally distributed. Most of the Al elements were dissolved in the matrix and precipitated in black phase such as Al N, and the hardness and corrosion resistance increased gradually with the increase of rolling temperature, and the elongation was about 47%. The deformation ability of high aluminum alloy was greatly improved, and the tensile strength of 1%Al (mass fraction) alloy could reach 766 MPa;. The fracture surface of the alloy is composed of a large dimple (515 渭 m) and a fine dimple (鈮，

本文編號(hào)：2359979