Abstract:
An angular channel processing machine (10) including a die (12) which defines first and second channels (13,15) that intersect at an angle, drive means (11) to drive a workpiece (23) through the first channel (13) in a direction toward the second channel (15). The second channel (15) is defined by a die surface (22) and an outer cylindrical surface (21) of a second channel rotatable roll (14) which are disposed in facing relationship. The angular arrangement of the first and second channels (13,15) is such that the workpiece (23) undergoes shear deformation at the region of intersection between the first and second channels (13,15) through engagement with the outer cylindrical roll surface (21).
Abstract:
A method of bonding a titanium article to another metal article using a superplastic interlayer is disclosed. A fine-grain titanium alloy interlayer is provided between faying surfaces of the articles to be bonded. The interlayer has an alpha-beta microstructure and an average grain size of less than about 1-3 microns (.001-.003 mm) in at least one plane. The articles to joined and the interlayer are heated to between 1000 °F (538 °C) and 1500 °F (816 °C). A sufficiently large compressive force is then applied to the articles to cause superplastic deformation of the interlayer and bonding of the articles.
Abstract:
A method of bonding a titanium article to another metal article using a superplastic interlayer is disclosed. A fine-grain titanium alloy interlayer is provided between faying surfaces of the articles to be bonded. The interlayer has an alpha-beta microstructure and an average grain size of less than about 1-3 microns (.001-.003 mm) in at least one plane. The articles to joined and the interlayer are heated to between 1000 DEG F (538 DEG C) and 1500 DEG F (816 DEG C). A sufficiently large compressive force is then applied to the articles to cause superplastic deformation of the interlayer and bonding of the articles.
Abstract:
A method for inducing superplasticity in a composite including a non-transforming phase and a transforming phase by cycling the composite material through a phase transformation of the transforming phase while applying an external stress to the composite material is provided as is a method for inducing superplasticity in a titanium/titanium carbide composite. Also provided is a method for forming a part from a composite material including a transforming phase and a non-transforming phase by cycling the composite through a phase transformation of the transforming phase and shaping the composite material by applying an external stress to the composite material while the transforming phase is undergoing a phase transformation to form a finished article.
Abstract:
The invention relates to a monolithic titanium alloy (M) comprising, in a temperature range (DeltaT) and at atmospheric pressure: an outer peripheral zone consisting of a micro-structure (m1) having a modulus of elasticity (E1) and possessing superelastic properties in said range (DeltaT), and a core consisting of a microstructure (m2) having a modulus of elasticity (E2), and possessing elastic properties in said range (DeltaT); said microstructures (m1) and (m2) being different from one another, and said modulus of elasticity (E1) being lower than said modulus of elasticity (E2).
Abstract:
The invention relates to a method for manufacturing a ferritic-austenitic stainless steel having good formability and high elongation. The stainless steel is heat treated so that the microstructure of the stainless steel contains 45-75% austenite in the heat treated condition, the remaining microstructure being ferrite, and the measured Md30 temperature of the stainless steel is adjusted between 0 and 50° C. in order to utilize the transformation induced plasticity (TRIP) for improving the formability of the stainless steel.
Abstract:
Acier à teneur extrêmement élevée en carbone, dont la quantité est comprise entre 0,8% en poids jusqu'à la limite maximale de solubilité du carbone dans l'ostéite, ainsi que de l'aluminium dont la quantié est comprise entre environ 0,5 à environ 10% en poids, une quantité effective d'un élément stabilisateur servant à protéger le carbure de fer contre la graphitisation, et le reste sous forme de fer. De préférence la teneur en aluminium est comprise entre environ 0,5 à environ 6,4% en poids et l'élément stabilisateur est le chrome. Cet acier possède une excellente ductilité et se prête facilement au travail à chaud, à froid et à des températures intermédiaires sans danger de fissure. L'acier est particulièrement utile pour les opérations de formage super-plastique, et une microstructure convenable peut être obtenue par toute technique qui permet de réduire sa granulométrie à environ 10 microns ou au-dessous, et de préférence à environ 1 micron. Avec cet acier on peut obtenir une granulométrie très fine et les additions d'aluminium et d'éléments stabilisateurs servent à maintenir la granulométrie fine pendant le traitement super-plastique.
Abstract:
질량%로, C:0.0010∼0.0040%, Si:0.005∼0.05%, Mn:0.1∼0.8%, P:0.01∼0.07%, S:0.001∼0.01%, Al:0.01∼0.08%, N:0.0010∼0.0050%, Nb:0.002∼0.020% 및 Mo:0.005∼0.050%를 함유하고, [Mn%]/[P%]가 1.6 이상 45 이하, [C%]-(12/93)×[Nb%]가 0.0005% 이상 0.0025% 이하이고, 잔량부가 Fe 및 불가피 불순물로 이루어지고, 판 두께의 1/4 두께의 깊이 위치에 있어서의 면에 평행한 {222}면, {110}면 및 {200}면의 각 X선 회절 적분 강도비 X(222), X(110) 및 X(200)이 하기 식을 만족시키고, 인장 강도가 300㎫ 이상 450㎫ 이하인 베이킹 경화성, 상온 내시효성 및 딥드로잉 가공성이 우수하고, 또한 면내 이방성이 작은 고강도 베이킹 경화형 냉연 강판을 제공한다.