A method of thermomechanically forming an article from a precursor thereof, the method comprising: providing the precursor, comprising an α + β Ti alloy having a beta transus temperature β transus, wherein the precursor defines a set of portions including a first portion; and thermomechanically forming the article from the precursor by heating the first portion and deforming the heated first portion by a total true strain ε 1,total, wherein the total true strain ε 1,total is greater than a predetermined threshold true strain ε thresold; characterised by: wherein thermomechanically forming the article from the precursor comprises i iterations of: (a) heating the first portion to a temperature T i during a time t i, wherein the temperature T i is at most the beta transus temperature β transus; (b) deforming the heated first portion by a true strain ε 1, i, wherein the true strain ε 1, i is at most the predetermined threshold true strain ε thresold; and (c) repeating steps (a) and (b) until the cumulative true strain ε 1,cumulative = Σ i ε 1, i is the total true strain ε 1,total, wherein i is a natural number greater than or equal to 2; wherein the temperature T i is in a range from β transus - 97°C to β transus - 3°C; wherein the time t i is in a range from 0.5 hours to 12 hours wherein i is equal to 1; wherein the time t i is in a range from 0.25 hours to 4 hours wherein i is greater than or equal to 2; and wherein the predetermined threshold true strain ε threshold is in a range from 0.5 to 0.85. providing the precursor, comprising an α + β Ti alloy having a beta transus temperature β transus, wherein the precursor defines a set of portions including a first portion; and thermomechanically forming the article from the precursor by heating the first portion and deforming the heated first portion by a total true strain ε 1,total, wherein the total true strain ε 1,total is greater than a predetermined threshold true strain ε thresold; characterised by: wherein thermomechanically forming the article from the precursor comprises i iterations of: (a) heating the first portion to a temperature T i during a time t i, wherein the temperature T i is at most the beta transus temperature β transus; (b) deforming the heated first portion by a true strain ε 1, i, wherein the true strain ε 1, i is at most the predetermined threshold true strain ε thresold; and (c) repeating steps (a) and (b) until the cumulative true strain ε 1,cumulative = Σ i ε 1, i is the total true strain ε 1,total, wherein i is a natural number greater than or equal to 2; (a) heating the first portion to a temperature T i during a time t i, wherein the temperature T i is at most the beta transus temperature β transus; (b) deforming the heated first portion by a true strain ε 1, i, wherein the true strain ε 1, i is at most the predetermined threshold true strain ε thresold; and (c) repeating steps (a) and (b) until the cumulative true strain ε 1,cumulative = Σ i ε 1, i is the total true strain ε 1,total, wherein i is a natural number greater than or equal to 2; wherein the temperature T i is in a range from β transus - 97°C to β transus - 3°C; wherein the time t i is in a range from 0.5 hours to 12 hours wherein i is equal to 1; wherein the time t i is in a range from 0.25 hours to 4 hours wherein i is greater than or equal to 2; and wherein the predetermined threshold true strain ε threshold is in a range from 0.5 to 0.85.