轧制方向对Ni47Ti44Nb9锻造板，热轧板及冷轧板织构影响

Influence of Rolling Direction on Textures of Ni47Ti44Nb9 Forged, Hot-Rolled and Cold-Rolled Plates

摘要:

采用XRD研究了Ni47Ti44Nb9锻造板坯织构、不同热轧、冷轧方向板材织构。研究表明，锻造板坯有典型的γ取向线织构，锻板心部最强取向在{111}<112>。沿轧向(RD)、交叉方向(CD)、横向(TD)热轧板织构类型相似，主要有3条取向线织构，接近{114}、{223}、{332}（或{221}），{332}面织构取向密度最强，最强织构分别为{221}<110>、{332}<113>、{332}<023>，不出现γ-织构。沿与轧向成0o、45o、90o方向二次冷轧最强织构近似为{332}<110>。90o方向二次冷轧织构强度最高，有多个强织构组分，γ-织构得到显著加强

Abstract:

Ni47Ti44Nb9 alloy plate texture has important influence on the shape memory property, so it is necessary to control the texture. The different rolling direction textures of the forged plate, the hot-rolled and the cold-rolled plates were investigated. Results show that the texture of the forged plate center presents a typical γ-fiber with a peak at {111}<112>. The textures of the plate hot-rolled along rolling direction(RD), cross direction(CD) and transverse direction(TD) mainly consist of three fiber types: {114}, {223}, {332} (or{221}), among them {332} has the strongest orientation density，and γ-fibre does not appear. The strongest textures of the plate hot-rolled along RD, CD and TD, are respectively {221}<110>, {332}<113> and {332}<023>, respectively. The secondary cold-rolled plate along RD, 0o, 45o and 90o to RD, has approximately the strongest {332}<110> texture. The secondary cold-rolling texture of 90°to RD has the highest orientation density, and the γ-fibre is significantly strengthened